Hi.
user
Hello. How may I help you?
assistant
I am Michael Davis, want to travel from DEN to OAK. Please help me in booking my ticket.
user
Sure, may I know your trip dates?
assistant
Sure, my travelling dates are from 07/05 to 07/07.
user
Sorry, there is no flight available.
assistant
It's ok, thank you for your help.
user
Most welcome.
assistant