Hi. I am Charles Roberts.
Hello, How can I assist you?
 I want to book a flight ticket to attend my friend's bachelor's party in Seattle. Can you book a flight ticket with price of 200?
Sure, May I know the journey codes?
Yes, my airport codes are CA-SFO and WA-SEA.
Please help me with your travel dates.
I have planned to travel on 12/02 and 12/04.
Please wait a minute.
Ok.
Sorry, No flights found with your preferable dates.
That's ok/.
Thank you for availing us.