You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What help I can do from end?

USER: I would like to spend my weekends with my family in BOS, can you find a flight to travel to BOS?

ASSISTANT: Sure. Can I know the travel dates please?

USER: My travelling dates would be 10/18 and back on 10/20.

ASSISTANT: Can you provide the departure code please?

USER: My current location is ORD.

ASSISTANT: May I know your name for proceeding further?

USER: I am Patrick Hall.

ASSISTANT: Hall, there are no flights as per your request. Thank you for reaching us.

USER: Ok, no problem, thank you for your information. Thank you.