Hello. I am Brian White.
user
Hello, how may I help you?
assistant
I planned to attend for a wedding in SFO, can you please help me to book a flight ticket from OAK?
user
Sure, can I know your preferable dates?
assistant
I prefer to travel on 03/18 and 03/20.
user
Sorry, no flights found on given date.
assistant
Ok, no problem. Thank you for your time.
user