You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Raymond Williams here. I want to attend my sister's wedding anniversary, can you please search a flight with single connection?

ASSISTANT: Sure. May I know your travelling dates?

USER: I will start my journey on 10/26 and my return will be on 10/28.

ASSISTANT: Can you share your airport codes?

USER: My airport codes are from DEN to JFK.

ASSISTANT: We did not find any connecting flight to your destination.

USER: It's ok, thank you for your information.

ASSISTANT: Thanks for choosing us.