You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: I want to book a flight on Dec 11th to visit Houston to attend a meeting. Can you book a flight for me?

ASSISTANT: Sure, can I know your source airport code along with your return date?

USER: My source point is BOS and I want my return flight on Dec 13.

ASSISTANT: Can you please provide your destination airport code please?

USER: My destination point is HOU.

ASSISTANT: Do you have any requirements for your journey?

USER: I want economy class. Please book me a connecting flight.

ASSISTANT: Ok, may I know your name please?

USER: My name is Kenneth Collins.

ASSISTANT: Southwest Airlines has a connecting flight with number 1002 for fare 100 with an economy class seat, shall I proceed?

USER: Please proceed with booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.