You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Angela Taylor here. I want to attend a seminar in Boston. Can you please help me for booking the flight ticket?

ASSISTANT: Ok, may I know your airport codes?

USER: My airport codes are MCO and BOS.

ASSISTANT: Fine, can I have your journey dates?

USER: My travelling dates are 12/03 and 12/05.

ASSISTANT:  May I know your preferable journey timings?

USER: I want to return on evening.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need flight with single connection.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: I want to travel in economy class flight.

ASSISTANT:   Sorry, there is no flight for you on your route.

USER: Anyway, thanks for the information.

ASSISTANT: Thanks for choosing us, have a good day.