You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Can you please help me in flight ticket booking process from IAH to DEN?

ASSISTANT: May I know on which dates you are willing to travel?

USER: Thank you for your response, I want to take off on Feb 26 and book my return ticket also on Feb 28.

ASSISTANT:  On whose name I have to book the flight ticket?

USER: Please confirm this flight ticket on my name Justin Robinson.

ASSISTANT: Is there any time concern?

USER: I want to return in afternoon time.

ASSISTANT:  Are there any more preferences that you want to avail?

USER: I want to travel in normal cost airline.

ASSISTANT: Thank you for your details, we do not found any flights running your preferred dates.

USER: Oh! It's ok, no problem. Thank you for your information.

ASSISTANT: Thanks for choosing us.