You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I am looking to book a flight ticket from SFO to PHX. Can you help me for that?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are Sep 12 and Sep 14.

ASSISTANT: May I know your name?

USER: My name is Stephen Young.

ASSISTANT: Do you need any specifications?

USER: I prefer to book a single connecting flight.

ASSISTANT: There is a flight with one connection and the price is 200 in Sprint Airlines, can I proceed with the reservation?

USER: Ok, proceed for booking.

ASSISTANT: Your ticket has been reserved with the flight number 1021.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching our service.

USER: Welcome.