You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you at this moment?

USER: My name is Rebecca Moore. I would like to visit San Francisco. Can you help me for booking a flight ticket from JFK to SFO?

ASSISTANT: Sure, please provide your travelling dates.

USER: My travelling dates are Sep 15 and Sep 17.

ASSISTANT: Ok, may I know your connection limit?

USER: I need a single connecting flight.

ASSISTANT: Ok, share your class preference.

USER: Any class is fine for me.

ASSISTANT: Ok, at what time would you like to depart and return?

USER: My return time is evening.

ASSISTANT: Ok, please wait for few minutes.

USER: Please search a normal cost airline.

ASSISTANT: There are no flights found on your requested dates.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.