You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My name is Jason Thomas, I want to book a flight from Washington DC-IAD to attend a meeting with client. Can you book a flight on 05/15?

ASSISTANT: Sure, I can help you. When would you like to return?

USER: I will return on 05/17.

ASSISTANT: Please share me your destination airport code.

USER: My destination airport code is MA-BOS.

ASSISTANT: We found a AA airline, flight number:1004 and the price is 100.

USER: Please proceed with booking.

ASSISTANT: Your fight ticket has been reserved.

USER: Thank you for helping me.

ASSISTANT: Thank you.