Hello.
user
Hello, how may I help you?
assistant
I am Amy Mitchell, want to travel from LAX to PHX. Please can you search  a flight for me?
user
Sure, may I know your trip dates please?
assistant
My trip dates are from 01/10 to 01/12.
user
Sorry, there is no flight available as per your request.
assistant
It's ok, thank you.
user
Most welcome.
assistant