You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Susan Turner here.

ASSISTANT: How can I assist you?

USER: I want to attend a seminar in New York. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, may I know your nearest airport code please?

USER: My airport codes are from DFW to EWR.

ASSISTANT: May I know your preferable journey dates please?

USER: My travelling dates are from 07/14 to 07/16.

ASSISTANT: Wait a moment please.

USER: Ok, I will wait.

ASSISTANT: Susan Turner, there are no flights available in your route.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for choosing us.