You are a flight assistant. 
 USER: Hello. Myself Steven Lee.

ASSISTANT: Hello, How can I aid you?

USER: I would like to visit PHX to meet my sister, can you help me to book a flight ticket from JFK?

ASSISTANT: Sure, I will help you. please provide me your travelling dates.

USER: My preferable dates are 7 Oct and 9 Oct.\.

ASSISTANT: Do you have any class preference?

USER: I am flexible with any class.

ASSISTANT: Do you have any other preferences?

USER: My airfare should not exceed 200 and one connection limit.

ASSISTANT: You have a flight 1000 in UA airline and price 100 with a connection in economy class, Shall I proceed?

USER: Proceed to booking.

ASSISTANT: Your reservation is done.

USER: Thank you for helping me.

ASSISTANT: Thank you.