You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Nicholas Campbell, want to travel from CLT to DFW. Please help me in booking my ticket.

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My travelling dates are from 02/29 to 03/02.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say, there is no flight as per your requests.

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us, have a nice day.