You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I would like to travel to SEA on 01/15 to attend an interview. Can you help me in booking a ticket?

ASSISTANT: Sure, let me know your source code and when you want return?

USER: My source airport code is ORD and I would like to return on 01/17.

ASSISTANT: Mean while may I know your name?

USER: Sure. My name is Anthony Gonzalez.

ASSISTANT: Ok, I got a flight on airline Southwest with the flight number 1028. Shall I proceed?

USER: Please proceed.

ASSISTANT: Ok, your has been booked.

USER: Thank you for helping me out.

ASSISTANT: Thank you for approaching us.