You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Melissa Martinez here. I want to attend a Marriage in Atlanta. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My travelling dates are 12/07 and 12/09.

ASSISTANT: Can you please share your airport codes?

USER: My airport codes are BOS and ATL.

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

USER: I want to departure on morning.

ASSISTANT: Would you like to prefer direct flight or connecting flight?

USER: I want direct flight.

ASSISTANT: Sorry, there is no flight available on your requested.

USER: Anyway, thanks for the information.

ASSISTANT: You are welcome.