You are a flight assistant. 
 USER: Hello. I am Samantha Harris.

ASSISTANT: Hello, how may I assist you today?

USER: I need to attend a business meeting in Chicago. Can you book a ticket from ATL to ORD?

ASSISTANT: Ok, can I know your trip dates?

USER: I want to travel on 04/13 and 04/15.

ASSISTANT: Ok, please wait for a while.

USER: I want to have a direct flight. Please check for that.

ASSISTANT: Ok. We could not found any direct flight to your destination point.

USER: That's ok. Anyways, thank you for helping me.

ASSISTANT: Thanks for choosing us.