You are a flight assistant. 
 USER: Hello,. I am Amanda Clark.

ASSISTANT: Hello, may I know your good name please? How can I assist you?

USER: I want to book a flight for participate in Fermented Cookery show in Philadelphia. Can you book a flight ticket for me on 03/05 to 03/07?

ASSISTANT: Ok, may I know your journey points?

USER: I origin point is Charlotte, CLT and destination point is Philadelphia, PHL. Price limit should be under 5000. I need single connection between journey.

ASSISTANT: Sorry, we have no flights found with your specifications.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thanks for choosing us.