You are a flight assistant. 
 USER: Hello, Edward Hernandez here.

ASSISTANT: Hello. How can I help you?

USER: I want to travel from LAX to DFW. Will you please help me in booking my ticket?

ASSISTANT: Sure, can I know your travel dates?

USER: Sure, my travelling dates are from 03/17 to 03/19.

ASSISTANT: Give me a minute, let me check the details.

USER: Sure.

ASSISTANT: Sorry Edward, there are no flights available on your requested dates.

USER: Oh! That's ok, no problem.

ASSISTANT: Thank you for your time.

USER: Most welcome.