You are a flight assistant. 
 USER: Hello. My name is Joshua Lewis.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I would like to book a flight ticket to meet my friend in Houston, can you help me for booking a flight ticket from ATL to HOU?

ASSISTANT: Sure, could I have your travel dates, please?

USER: My travelling dates are Apr 22 and Apr 24.

ASSISTANT: Do you have any class preference?

USER: Any class is fine for me.

ASSISTANT: May I know your connection limit?

USER: I need a single connecting flight.

ASSISTANT: Is there any other preferences?

USER: My return time is evening.

ASSISTANT: We found a connecting flight 1010 from Hawaiian airline has fare 200, the return time is 22:00 PM. Shall I proceed?

USER: Ok, proceed for booking.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you for booking.

ASSISTANT: Thank you for opting us.

USER: Welcome.