Hello.
user
Hello. How can I aid you?
assistant
My name is Mark Thompson. I have a plan to meet my friend in Oakland. Can you help me for booking a flight ticket?
user
Sure, can you please share your trip dates?
assistant
My travelling dates are from 12/18 till 12/20.
user
Ok, may I know your airport codes?
assistant
My travelling airport codes are from DTW to OAK.
user
Sorry, no flights are available on your route.
assistant
That's ok, thank you for checking.
user
Welcome, have a nice day.
assistant