You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Please help me in booking flight ticket from OAK to PHL.

ASSISTANT: Sure, may I know your planned travel dates?

USER: My trip dates are Sept 20 to Sept 22.

ASSISTANT: May I know your connection limit?

USER: I prefer to travel in connecting flight.

ASSISTANT: Is there any class preference for you?

USER: I would like to fly in economy class.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Your good name please.

USER: Lisa Mitchell here.

ASSISTANT: We found an airline: Southwest Airlines, flight number: 1013 and price is 100 with one connection.

USER: You can proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.