Hi, I am Daniel Lee.
user
Hello, how can I help you today?
assistant
Can you book a flight ticket on 03/25 to attend my brother's birth day party?
user
Sure, kindly mention your airport codes?
assistant
I want to leave from Oakland, OAK to reach Washington, IAD.
user
Can you please provide me your return date?
assistant
I intend to return on 03/27.
user
Ok, please wait a moment.
assistant
Ok.
user
Sorry to say, no flight found with your requirement.
assistant
Ok, thank you.
user
Thanks for reaching us.
assistant