You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

USER: Can you please help me in booking my flight ticket from DEN to ATL?

ASSISTANT: Sure, when do you want to start and return on?

USER: My travelling dates are May 10 and 12.

ASSISTANT: Do you need a connecting flight?

USER: I need direct flight.

ASSISTANT: Do you need any other specifications?

USER: No.

ASSISTANT: Can I know your good name?

USER: Myself Andrew Young.

ASSISTANT: Thank yo for your details, there are no flights found with the given details.

USER: Thanks for your information.

ASSISTANT: Thank you.