You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: Could you please reserve a seat to Philadelphia, PHL?

ASSISTANT: Sure. May I know your source code?

USER: I would like to start from Chicago, ORD.

ASSISTANT: To proceed booking I need your travelling dates.

USER: To attend the film festival, I am planning to go on 07/17. I will return n 07/19.

ASSISTANT: Thanks for waiting, there is a flight with airline: UA, flight number:1004, price 100,1 connection.

USER: Ok.

ASSISTANT: Shall I proceed?

USER: You can proceed. with booking on my name Christine Parker.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for availing us.