Hello.
user
Hello, how may I serve you?
assistant
 I am Stephen Hill. I want to view Minnehaha Falls at MNB-MSP for a short vacation. Can you book a direct flight?
user
Sure, may I know your travelling dates?>.
assistant
My travelling dates are 09/19 and 069/21. I will return on 09/21.
user
Kindly provide your source code.
assistant
 I will depart from CA-LAX.
user
I am sorry to inform that there is no flight found with your requirements.
assistant
OK. Thank you for your service.
user
Thank you for reaching us.
assistant