You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I am Debra Green. I am planning to book a ticket form OAK to PHL. Can you please help me out?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: I am planning to travel on Mar 25 and return back on Mar 27.

ASSISTANT: Do you have any class preferences?

USER: No.

ASSISTANT: Do you have any airline preferences?

USER: No, my return time is afternoon.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: I am looking for a connecting flight.

ASSISTANT: There is a flight with ticket fare 200 in UA airlines with a stopover in economy class. Is it ok for you?

USER: That's fine, please proceed the booking.

ASSISTANT: Your booking is confirmed with flight number 1017. Departure time is 17:00 PM and arrival time is 12:00 PM.

USER: Thank you for your service.

ASSISTANT: Thank you for contacting us, have a nice day.