You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you for the day?

USER: I would like to travel to DTW for business trip, can you please reserve flight ticket from SFO?

ASSISTANT: Sure, help me with the trip dates?

USER: Sure, my planned travelling dates are from Feb, 20 to Feb, 22.

ASSISTANT: May I know your name for the booking process?

USER: Sure, my name is Joseph Anderson here.

ASSISTANT: Do you have any preferences for this trip?

USER: Yes, I used to prefer to travel in big brand airlines and flight has to be with single connection.

ASSISTANT: There is a flight in an airline United with 1024 number having a single connection price of 100 in an economy class. Shall I proceed to book?

USER: Please proceed for booking.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us. Have a safe flight.

USER: Thank you.