Hello, I am Elizabeth Walker.
user
Hello. How may I help you?
assistant
I would like to visit Jack London Square in Oakland, so could you please book a ticket for me?
user
Ok, please mention your trip dates to get a flight for you.
assistant
Sure, I would like to go on 06/23 and return back on 06/25.
user
Ok, may I know your airport codes?
assistant
My source and destination airport codes are ORD and OAK.
user
Sorry for the inconvenience, there is no flight found on your route.
assistant
That's ok, thank you for checking.
user
Welcome Elizabeth Walker, have a good day.
assistant