You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Christopher Lewis.

ASSISTANT: How may I oblige you today?

USER: I want to visit Denver Museum of Nature and science at Denver. Can you help me in booking a flight ticket from Austin?

ASSISTANT: Sure, please mention your codes of journey?

USER: My airport codes are from AUS to DEN.

ASSISTANT: Kindly, mention your traveling dates?

USER: My travelling dates are from 01/25 to 01/27.

ASSISTANT: May I know your budget for flight ticket?

USER: Make sure that price limit is 500.

ASSISTANT: Just hold on a moment, I will check and revert to you.

USER: Sure.

ASSISTANT: We are glad to inform, there is a flight found with Delta airline of flight 1002. Can I proceed?

USER: Ok, Proceed with booking.

ASSISTANT: Your booking has been done successfully.

USER: Thanks for your help.

ASSISTANT: Thank you for choosing us.