You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Please help me to book a flight ticket from ATL to ORD.

ASSISTANT: Sure, we are here to help you. Can you share me your travelling dates?

USER: My journey dates are from Feb, 17 to Feb, 19.

ASSISTANT: May I know your name?

USER: Gary Roberts.

ASSISTANT: Do you have any other specifications?

USER: I need a direct flight to fly.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: Thank you for your information.

ASSISTANT: Thanks for approaching us.