You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Stephen Thomas.

ASSISTANT: How can I aid you now?

USER: Can you please book me a flight ticket from ATL to IAH/.

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

USER: My travelling dates are Sep 27 and Sep 29.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: May I know about your class preference?

USER: I am comfortable with any class.

ASSISTANT: Do you have any other specifications?

USER: I would like to return in the morning.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Hawaiian airlines is providing you the connecting flight which departs at 4 AM and arrives at 3 AM. Shall I proceed?

USER: Yes, you can proceed.

ASSISTANT: Your ticket has been reserved with flight-1000.

USER: Thank you.

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