You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Michael Carter. I am planning for a round trip, could you please help me with booking a flight ticket from SFO?

ASSISTANT: May I know your desired travel dates please?

USER: I would like to depart on Mar 5th and return on Mar 7th.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: There is a flight with connection limit 1 and fare 100, shall I proceed for booking?

USER: Yes, please confirm the booking.

ASSISTANT: Your ticket is booked, flight number 1009.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for opting us.