You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to fly from DEN to ATL. Can you check the flight availability from that route?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My planned travel dates are 08/27 and 08/29.

ASSISTANT: Do you have any preferences about flight connections?

USER: I want a flight with maximum connection of 1.

ASSISTANT: Do you have any preferences about airline?

USER: Sorry  I am comfortable with direct flight only.

ASSISTANT: Please mention your name.

USER: Sure, Mary Lee here.

ASSISTANT: There are no flights found under your preferable details.

USER: No issues, thank you for the information.

ASSISTANT: Thanks for reaching us, have a great day.