You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to meet my sister on her birthday, could you please help me to book my flight ticket from DEN to HOU?

ASSISTANT: Sure, can you please specify me your dates of travel?

USER: Sure, I will depart on 03/03 and return back on 03/05.

ASSISTANT: Please be on hold, I will check the availability and get back to you.

USER: Sure.

ASSISTANT: Ok, there is a flight 1002 in Delta airline matching your details with price 100. Shall I proceed?

USER: Yes, you can proceed for booking the ticket.

ASSISTANT: May I know your name to proceed further.

USER: Yes, my name is Brian Campbell.

ASSISTANT: Ok, your booking is done.

USER: Thank you very much for your help.

ASSISTANT: You are welcome, have a safe journey.