You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Here Nancy Young.

ASSISTANT: How may I help you?

USER: I need to travel from LAS to HOU to attend a music event, can you help me out in booking a flight ticket?

ASSISTANT: May I know your travel dates?

USER: I am planning to travel on 02/07 and return on 02/09.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

USER: Ok, no problem. I will choose another source to reach my destination.

ASSISTANT: Thank you for reaching us.