You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I need to book my ticket from BOS to SFO. Can you please help me with booking a flight ticket?

ASSISTANT: Sure, may I know your name please?

USER: Sure, myself Donna Nelson.

ASSISTANT: May I know your planned travelling dates please?

USER: My planned travel dates are from Mar 21  to Mar 23.

ASSISTANT: May I know your class preference please?

USER: No, I am comfortable with any class.

ASSISTANT: May I know your connection limit please?

USER: I need a connecting flight in my journey.

ASSISTANT: There is a connecting flight of fare 100 with economy class in Delta airline, shall I proceed for booking/.

USER: That's ok, please proceed with booking.

ASSISTANT: Your ticket has been confirmed with flight number 1007.

USER: Thank you for helping me.