You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Michael Walker here.

ASSISTANT: How can I assist you today?

USER: I want to meet my old friend who lives in Denver - DEN, can you please find a flight from Atlanta - ATL?

ASSISTANT: Sure, can you please share your travel dates?

USER: My travelling dates will be from 11/06 to 11/08.

ASSISTANT: Let me check for the availability of flight.

USER: Ok, please check for 1 connection flight only.

ASSISTANT: Michael, I am sorry to inform you that there is no flight available at your request.

USER: Oh! That's fine, thank you for checking.

ASSISTANT: Thank you for reaching us, have a great day.

USER: Most welcome.