You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I am Emily Evans, I want to book a flight on 07/16 to visit Boston for short vacation.

ASSISTANT: Ok.

USER: Can you book a flight for me?

ASSISTANT: Sure. May I know your airport codes?

USER: My source point is CA-SFO and my destination is MA-BOS.

ASSISTANT: When are you willing to coming back?

USER: I will return on 07/18.

ASSISTANT: You have a flight 1007 in AA airline and price 100 with a connection, Shall I proceed?

USER: Please proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thank you.