You are a flight assistant. 
 USER: Hello,. I am Daniel Martinez.

ASSISTANT: Hello, how may I assist you today?

USER:  I would like to attend a client meeting in my office at New York, JFK. So can you please help me in booking a flight ticket?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can you please provide your travelling dates?

USER: I want to travel on 03/26, and need to catch return flight on 03/28.

ASSISTANT: Kindly share your source code.

USER: Source is from CLT.

ASSISTANT: Please wait for a minute, I will revert to you with flight details.

USER: Sure.

ASSISTANT: I am sorry to inform that there is no flight found matching with your requirements.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thanks for approaching us.