Hello.
user
Hello, how may I help you?
assistant
My name is Donna Young. I want to travel from SFO to DTW.
user
Ok. may I know your travelling dates.
assistant
My preferable dates are from 09/10 to 09/12.
user
Sorry Donna, there are no flights available on your given date and route.
assistant
That's ok. Thank you.
user
You are most welcome.
assistant