You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Kevin Walker here.

ASSISTANT: How can I assist you?

USER: I have a Shuttle tournament in Washington.Can you please help me for booking a ticket?

ASSISTANT: Sure Kevin, can I know the trip dates please?

USER: My departure date is 11/25 and return date is 11/27.

ASSISTANT: Can you provide the take off and landing codes please?

USER: My airport codes are from PA-PHL to DC-DCA.

ASSISTANT: Ok, wait a moment I will get back to you.

USER: Make sure my connections limit is 1.

ASSISTANT: There is a flight for you as per your request in Spirit airline. Shall I book it?

USER: Please proceed for booking.

ASSISTANT: Your ticket has been booked with flight number 1027.

USER: Thank you for helping me.

ASSISTANT: You are welcome.