Android dialog height and widh is behaving unexpectedly

HI i have custom dialog now when i run the code it behaving unexpectedly. It shrinks it's height and width . The xml of custom dialog is added below

 <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://ift.tt/nIICcg"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#143849"
android:orientation="vertical" >

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center" >

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="30dp"
        android:src="@drawable/plainwhite" />
</LinearLayout>

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:weightSum="10" >

    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="3"
        android:gravity="center" >

        <ImageView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:src="@drawable/plainwhite" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="7"
        android:orientation="vertical" >

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="FLIGHT DETAILS" />

        <TextView
            android:id="@+id/placeTravel"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="Kannur - Trivandrum" />

        <TextView
            android:id="@+id/dateOfTravel"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="wed, dec-10 " />

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="20dp"
            android:weightSum="10" >

            <TextView
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="4"
                android:text="Depart" />

            <TextView
                android:id="@+id/departTV"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="6"
                android:hint=":Kannur" />
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:weightSum="10" >

            <TextView
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="4"
                android:text="Arrive" />

            <TextView
                android:id="@+id/arriveTV"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="6"
                android:hint=":Trivandrum" />
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:weightSum="10" >

            <TextView
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="4"
                android:text="Duration" />

            <TextView
                android:id="@+id/durationTV"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="6"
                android:hint=":02h 15m nonstop" />
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:weightSum="10" >

            <TextView
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="4"
                android:text="Price" />

            <TextView
                android:id="@+id/travelPriceTV"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="6"
                android:hint=":$450 per Adult" />
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:weightSum="10" >

            <TextView
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="4" />

            <TextView
                android:id="@+id/planType"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="6"
                android:hint="(Non refundable)" />
        </LinearLayout>
    </LinearLayout>
</LinearLayout>

</LinearLayout>

And the code calling the dialog is added below

    Dialog dialog = new Dialog(context, R.style.customDialogStyle);
    dialog.setContentView(R.layout.flight_info_dialog);

what I am getting is shown below

Any help will be appreciable