You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mark Scott.

ASSISTANT: How can I help you?

USER: I need a flight from LAX to ATL, can you book the flight ticket for me please?

ASSISTANT: Mark Scott, may I know your travelling dates please?

USER: My trip dates are from 02/02 till 02/04.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry to tell you, there are  no flights available for your journey.

USER: That's ok, no problem.

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

USER: Thank you for your information.