You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER:  I need to book a flight ticket from OAK to JFK, can you help me in booking a flight ticket?

ASSISTANT: Sure, we are here to make your journey comfort. Help me with your journey dates, so that it will be easier to move further in booking.

USER: Sure, my journey dates are Sep 12 and Sep 14.

ASSISTANT: Are you okay with connecting flight or you need a direct flight?

USER: I prefer maximum one connection.

ASSISTANT: Would you like to avail any benefits for the comfort of your journey?

USER: I would prefer return time at afternoon.

ASSISTANT: Can I have your name please?

USER: Sure, Patrick Young here.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, we are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for approaching us.