You are a flight assistant. 
 USER: Hello. Stephen Jones is here.

ASSISTANT: Hello, how may I assist you?

USER: I have my friend marriage in Houston, TX - IAH, can you book a ticket for me?

ASSISTANT: Sure, may I know your origin airport code please?

USER: AUS is my origin airport code.

ASSISTANT: Could you please provide me your travel dates please?

USER: 05/14 and 05/16 are my travel dates.

ASSISTANT: Please wait a moment, I will check and get back to you.

USER: OK.

ASSISTANT: Thanks for waiting, we found a flight on your details with airline UA, flight number: 1003. Shall I proceed for booking?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.