You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Nancy Davis.

ASSISTANT: How may I assist you?

USER: Can you please reserve me a flight ticket from ATL to LAS?

ASSISTANT: Sure, may I know your travel dates?

USER: My trip dates are 07/08 - 07/10.

ASSISTANT: Which airline do you prefer to travel?

USER: I am comfortable with any airline.

ASSISTANT: Sorry, there is no flight on your details.

USER: Not a problem, thank you.

ASSISTANT: Thank you.