Hello. I am Gregory Young.
user
Hello, how can I aid you?
assistant
 I want to surprise my mother on her birthday at Austin, TX-AUS. Can you please book a ticket from Oakland, CA-OAK?
user
Sure. Can I know you price limit?
assistant
I can afford up to 500.
user
Let me know your journey dates.
assistant
 My travel dates are 01/17 and 01/19.
user
Wait for a while.
assistant
 Ok.
user
There is a flight of UA airline, flight number 1002 with the fare of 100.
assistant
Ok, you can proceed.
user
Your ticket has been booked.
assistant
 Thank you for booking.
user
Thank you for availing us.
assistant