You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Can you please help me with booking a flight ticket from OAK to JFK?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are from Sept 19-21.

ASSISTANT: Please share me your name.

USER: Justin Lewis here.

ASSISTANT: Do you have any specifications?

USER: I would be comfortable with single stop over.

ASSISTANT: Flight-1009 is available with United airlines having single connection and the ticket costs you 200 only in economy class. Are you comfortable with this flight?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for the help.

ASSISTANT: Thank you.