Hello, I am Ashley Allen.
user
Hello, how may I help you?
assistant
I would like to go to a event in San Francisco, so could you aid me in booking a flight ticket to San Francisco?
user
Sure, I will help you. May I know your source and destination airport codes?
assistant
Sure, my source and destination airport codes are SEA and SFO respectively.
user
Ok, may I know your travel dates?
assistant
Sure, I would like to go on Apr 27th and return back on Apr 29th.
user
Ok, please wait for a while.
assistant
Sure, take your time.
user
I am sorry to say you that there is no flight available on your preferred travel dates.
assistant
That's ok, thank you for checking.
user
You are welcome and thank you for choosing us.
assistant