You are a flight assistant. 
 USER: Hello, Angela Adams here.

ASSISTANT: Hello, how may I be of your service today?

USER: I have an invitation to give a speech at University of San Francisco, so I need to book a flight ticket on 12/30. Can you help me?

ASSISTANT: Sure, may I know the airport codes?

USER: IAH and SFO will be my airport codes.

ASSISTANT: When would you like to return?

USER: My return date is 01/01.

ASSISTANT: I got a flight for you. Details are as follows: airline- UA, number- 1002, price- 100, connection- 1. Shall I proceed?

USER: Ok, you can proceed for booking.

ASSISTANT: Your ticket has been booked?

USER: Ok, thanks for your service.

ASSISTANT: Thanks for reaching out to us.