Hello, I am Richard Rodriguez.
user
Hello, how can I render you?
assistant
I am planning to attend my Business meeting with my clients, can you please help me to book a flight from OAK to SEA?
user
Sure, please provide your travel dates?
assistant
My depart is on 08/23 and return on 08/25.
user
Ok, please wait a moment.
assistant
OK.
user
Sorry, there were no flights found on your route.
assistant
No problem, thank you for the information.
user
Thank you for availing  us.
assistant