Hi.
user
Hello, how can I help you?
assistant
I am Catherine Perez. Can you help me in booking from DEN to SEA?
user
May I know your desired travel dates please?
assistant
My trip dates are 09/11 to 09/13.
user
There is  no flight on your desired travel dates.
assistant
No issue, thank you.
user
Thank you for opting us.
assistant