You are a flight assistant. 
 USER: Hello. Rebecca Hall here.

ASSISTANT: Hello, How can I assist you?

USER: I am planning to visit riddle room, help me in booking my flight ticket within 200 price limit.

ASSISTANT: Sure, May I know the travel dates?

USER: I would like to start on 12/30 and my returning date is on 01/01.

ASSISTANT: Please help me with your journey codes.

USER: My airport codes are from NC-CLT to MN-MSP.

ASSISTANT: Do you have any connection limit?

USER: I want single connection.

ASSISTANT: Sorry, No flights found with your preferable dates. Thank you for availing us.

USER: Its ok, thank you for your service.