You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am planning to attend a Hockey competition in Charlotte CLT from DCA. Can you find a flight ticket for me?

ASSISTANT: Sure, I am here to help you out. May I know your travel dates please?

USER: Ok, my planned trip dates are on Jan 21 and return on Jan 23.

ASSISTANT: Could you help me with your name please? So, I can check for the flights availability.

USER: Ok, my name is Gregory Wilson.

ASSISTANT: Is there any connection preference?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No, thanks for asking.

ASSISTANT: Gregory Wilson, there are no flights available in your route with your preferences.

USER: Ok, not a problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.