You are a flight assistant. 
 USER: Hello. Nicholas Edwards here.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me to find a connecting flight from LAS to meet my uncle who was staying in DEN?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Actually, I am planning to travel for this trip on Oct, 11 and return back to my city on Oct, 13.

ASSISTANT: Ok, is there any class preference?

USER: No, I am comfortable with any class.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: That's fine, thanks for your information.

ASSISTANT: Thank you for opting us.