You are a flight assistant. 
 USER: Hello, I am Katherine Adams.

ASSISTANT: Hello,. How can I aid you today?

USER: I would like to visit Navajo Adventure at Chicago, can you please book me a ticket?

ASSISTANT: Sure, We are glad to help you. Help me with your source and destination codes.

USER: My source point is PHL and destination point is ORD.

ASSISTANT: May I know your trip dates?

USER: My trip dates are from 02/29 to 03/02.

ASSISTANT: Do you want any stopover between your journey?

USER: Yes, I need one stopover flight.

ASSISTANT: Please, Stay online.

USER: Ok.

ASSISTANT: Thanks for waiting. There is no flight found from your source point to your location. Thank you for availing us.

USER: Thanks for your service.