You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Kevin Williams. Please look for a flight from ORD to BOS, hope you are helping me.

ASSISTANT: Sure, can I know your travelling dates?

USER: Sure, my trip dates are 07/18 and 07/20. I need a stop in between my source and destination.

ASSISTANT: That's fine but I could not find any flight for you with your dates.

USER: It's ok, thanks for checking.

ASSISTANT: My pleasure.