Hi.
user
Hello, how may I assist you?
assistant
I am Mary Harris. I am planning to travel from IAD to LAS, can you help in booking a flight for me?
user
Sure, may I know your planned travel dates please?
assistant
I like to travelling dates are 05/11 to 05/13.
user
Please wait for a moment.
assistant
Sure.
user
Sorry, there is no flight available on your requested dates.
assistant
That's ok, thank you for your help.
user
You are most welcome.
assistant