Time that is added in the trip was not included in the email that is received either by the client or the admin.
But now, with the release of the WP Travel version 4.3.2, we have added the feature where you will be able to display your chosen time in the email through the use of email tag.
For this you simply need to go to Admin Panel > WP Travel > Settings > Email and add the column in the email template to add the email tag.
Chose your preferred time for the booking from the frontend as shown in the screenshot below.
The time you have chosen will be displayed in the email after you added the email tag mentioned above.