You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Christine Collins. I want to attend Religious festivals at Charlotte, Can you help me for booking a flight ticket please?

ASSISTANT: Sure, on what dates are you planning to make your trip?

USER: My travelling dates are 05/12 and return on 05/14.

ASSISTANT: How much airfare are you looking for?

USER: 500 is my price limit.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Could you please provide me your airport codes to check the availability of flights?

USER: My travelling airport codes are ORD and CLT.

ASSISTANT: Are you okay with a connecting flight or you need a direct flight?

USER: I need a connecting flight.

ASSISTANT: Thanks for sharing your essentials. Currently there are no flights going on your way.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for approaching us.