Hi.
user
Hello, how can I help you today?
assistant
I am Dorothy White. I would like to travel in a less expensive flight. So search for a flight with in price 500.
user
Sure Dorothy White, I am here to help you with this.  Can you please provide your preferable airport codes?
assistant
JFK and OAK are my nearest airport codes.
user
May I know your respective travel dates?
assistant
12/18 and 12/20 are my travelling dates.
user
Thank you for waiting, but I am sorry to say that there are no flights available as per your given travel dates?
assistant
No issue. Thank you.
user
You are welcome, thank you for reaching us.
assistant