You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nicholas Turner.

ASSISTANT: How can I assist you today?

USER: I am planning to visit ATL to meet my friend, can you please find a flight from DEN?

ASSISTANT: Sure, I will help you in booking. Please share your travel dates also.

USER: I would like to start my journey 06/26 and my return will be on 06/28.

ASSISTANT: Sorry, no flights are available on your route.

USER: That's ok, thank you for checking.

ASSISTANT: Welcome, have a nice day.