Hello.
user
Hello, how may I help you?
assistant
I am planning to visit National Mall in Washington, DC-IAD on 09/12.Can you please help me for booking the flight ticket from MN-MSP?
user
Sure, may I know your travelling dates?
assistant
The travelling dates are from 09/12 to 09/14.
user
Ok, may I know your name?
assistant
Sure, I'm Benjamin Collins.
user
Sorry, no flight's available on your details.
assistant
Thank you for your information.
user
Thank you for contacting  us.
assistant