You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you at this moment?

USER: I'm Charles Martinez. I am planning to attend music concert at LAX, can you please help me with booking a flight ticket from DEN?

ASSISTANT: Sure Charles, I will help you in booking, can you please share your travelling dates?

USER: Sure, I would like to take off on 01/29 and return back on 01/31.

ASSISTANT: Sorry for the inconvenience, no flights as per your details.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: It's my pleasure, have a nice day.