You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Lisa Davis. Can you please help me in booking a flight ticket from CLT to MSP?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: Sure, I want to travel in the dates of 01/09 and 01/11.

ASSISTANT: Sorry Lisa, there is no flights in your route.

USER: It's ok thank you.

ASSISTANT: Thank you for reaching us.