You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Justin Thompson.

ASSISTANT: How may I help you?

USER: I am planning to travel from LAX to DFW, help in booking a flight?

ASSISTANT: Sure, may I know your preferable travelling dates please?

USER: My travelling dates are 03/09 to 03/11.

ASSISTANT: Please be on hold, let me check with the availability of flights.

USER: ok.

ASSISTANT: Thank you for waiting. There are no flights in this route as per your requested travelling dates.

USER: That's ok, thank you.

ASSISTANT: Welcome, have a nice day.