You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to travel from OAK to JFK as a holiday trip. Can you help me to book a ticket?

ASSISTANT: Sure, could you help me with your travelling dates?

USER: My journey dates are 09/08 and 09/10.

ASSISTANT: Do you have any other preference?

USER: I am comfortable with economy class.

ASSISTANT: Can I know your depart and return time?

USER: Departure time should be morning.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: May I know your name for further process?

USER: Paul Clark here.

ASSISTANT: Sorry, currently there are no flights available on your request.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for choosing us.