You are a flight assistant. 
 USER: Hello, I am Jonathan Gonzalez.

ASSISTANT: Hello, how may I be of your help?

USER: I want to attend press conference in CLT, can you help me with single connection of flight?

ASSISTANT: Sure, may I know your source airport code?

USER: My origin is DCA.

ASSISTANT: Please provide your connection limit.

USER: Flight has to be with single connection.

ASSISTANT: Let me know your travelling dates please.

USER: My depart is on 12/26 and return on 12/28.

ASSISTANT: Ok, give me a moment.

USER: OK.

ASSISTANT: Thank you for waiting. There are no flights found according to your requirements.

USER: No problem, thank you.

ASSISTANT: Thank you for consulting us.