You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Margaret Wright. I am planning to book a ticket from SFO to DEN. Can you please help me out?

ASSISTANT: Sure, kindly share your travel dates.

USER: I am planning to travel on Nov 25 and return back on Nov 27.

ASSISTANT: Do you have any connection preference?

USER: Yes,my return time should be evening. I am looking for a connecting flight.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: There is a flight with your requirement, airline is Delta with price 100 and single connection. Shall I proceed with booking?

USER: That's fine, please proceed the booking.

ASSISTANT: Your booking is done and flight number is 1001.

USER: Thank you for your service.

ASSISTANT: Thanks for reaching us.