You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Patricia Young. I need to travel from MSP to ATL. Can you please help me in booking a flight ticket?

ASSISTANT: Sure, can I know your preferable dates?

USER: My trip dates are 09/18 and 09/20.

ASSISTANT: Sorry, no flights found on given schedule.

USER: Ok, not a problem. Anyway thank you for your information.

ASSISTANT: Thank you for reaching us.