You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Kevin Taylor here. I want to travel from Chicago to Boston for attending a Seminar. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I will help you. May I know your travelling dates?

USER: My travelling dates are from 12/30 to 01/01.

ASSISTANT: Can you please provide your journey codes?

USER: My airport codes are from ORD to BOS.

ASSISTANT: Thanks for the information.

USER: My pleasure.

ASSISTANT: Unfortunately, there is no flight available matching with your requirements.

USER: Anyway, thanks for the information.

ASSISTANT: Thanks for reaching us.