You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am Laura Martinez. I want to book a flight ticket from DEN to CLT. Could you help me in booking?

ASSISTANT: Sure, help me with the trip dates?

USER: My travelling dates are from Sep 06-08.

ASSISTANT: How much can you afford for this trip?

USER: I can spend 5000 for this trip.

ASSISTANT: We do not found any flights running in your preferred dates.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.