You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Amy Lewis, I want to book a direct flight to attend a meeting with my friends. Can you book a flight under fare of 200?

ASSISTANT: Sure, Please provide me your airport codes.

USER: My source point is NY-JFK and destination is CO-DEN.

ASSISTANT: Can I have your travelling dates?

USER: I will fly on 04/10 and return on 04/12.

ASSISTANT: Sorry, there are no flights with your requirement.

USER: Ok, thank you for the information.

ASSISTANT: Have a good day.