Hello.
user
Hello, may I help you today?
assistant
I'm Patrick Wilson. I am planning to travel from SFO to SEA to attend a convocation party, can you please help me with booking a flight ticket?
user
Sure, can I know your travelling dates?
assistant
Sure, I would like to take off  on 03/27 and return back from Seattle on 03/29.
user
Sorry Wilson, no flight's available on your details.
assistant
Ok, no issue I will search for another way to complete my trip.
user
Thank you for contacting us.
assistant
Thank you for checking.
user