You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I guide you today?

USER: Gary Parker here. Could you please help me with booking ticket from SFO to DFW with single connection?

ASSISTANT: Sure, I am here to help you with that flight ticket booking. May I know your travelling dates, please?

USER: Ok, my planned dates are from Mar 01 to 03.

ASSISTANT: Do you have any particular time for departing and returning?

USER: Yes, I want to departure in the afternoon and returning in the morning time.

ASSISTANT: Do you have any other specifications?

USER: Yes, I need a flight with economy class.

ASSISTANT: Sorry for the inconvenience, there are no flights found on this route as per your travel dates.

USER: It's ok, not an issue. Thanks for checking.

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