You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I need to travel SFO and PHX, can you reserve flight ticket?

ASSISTANT: Yes, can you tell me your dates of travel?

USER: My travelling dates are Feb,22 and Feb,24.

ASSISTANT: Do you have any other preferences?

USER: I prefer single connecting flight.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: I have found an economy class ticket with a price of 100 and 1 connection.

USER: Proceed with the reservation.

ASSISTANT: Can I know your name for booking?

USER: Myself William Collins.

ASSISTANT: Your ticket has been booked.

USER: Thank you for help in reservation.

ASSISTANT: Thank you for contacting us.