Hello.
user
Hello, how can I assist you?
assistant
I am Anna Hill planning to visit the capital city of United States, can you book a ticket from OAK to IAD?
user
Sure, may I know your journey dates?
assistant
Sure, my travel dates are 12/28 and 12/30.
user
Please wait for a moment, I will check and get back to you.
assistant
Ok.
user
Thanks for waiting. Sorry, no flights found with your given details.
assistant
Ok, thank you.
user
Thanks for choosing us.
assistant