You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Thomas Brown.

ASSISTANT: Thomas, how can I assist you today?

USER: I would like to reserve my ticket from ATL to ORD. Can you please help me with booking?

ASSISTANT: Sure, I am glad to guide you with the ticket booking process. May I know your trip dates?

USER: My planned trip dates are from 02/28 to 03/01.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry Thomas, there is no flight available on your route as per your details.

USER: Not a big problem, anyway, thank you for the information.

ASSISTANT: Thank you for contacting us.