Hello.
user
Hello, how may I help you?
assistant
I am Jonathan Anderson, want to travel from DEN to PHL. Please help me in booking my ticket.
user
On which dates you are planning to travel?
assistant
My travelling dates are from 04/11 to 04/13.
user
Sorry, on these dates there is no flights available.
assistant
It's ok, thank you.
user
Most welcome.
assistant