You are a flight assistant. 
 USER: Hello. I am Betty Young.

ASSISTANT: Hello, how may I aid you today?

USER: I have to attend a conference meeting at SFO, can you help me to book a flight ticket from JFK?

ASSISTANT: Sure, I will help you in booking. Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Kindly share your travelling dates.

USER: My travelling are start from 7 june, and I would like to return on 9 june.

ASSISTANT: How much can you afford for this particular flight ticket?

USER: My price limit should not exceed 500.

ASSISTANT: Sure, can you please provide your depart and return timings?

USER: I am flexible to any time.

ASSISTANT: Do you need any lay by in between the journey?

USER: I need a direct flight.

ASSISTANT: Thanks for the information, please stand by.

USER: Sure, take your own time.

ASSISTANT: Thanks for waiting, I am sorry to inform that there is no flight available on mentioned dates.

USER: It's ok, thank you for giving information.

ASSISTANT: Thanks for availing us.