Hello. My name is Benjamin King.
user
Hello, how can I help you?
assistant
Can you please book me a flight ticket from DFW to JFK?
user
Sure, may I know your trip dates?
assistant
Sure, my travelling dates are from 02/19 and 02/21.
user
Sorry, there is no flight on your requested travelling dates.
assistant
It's ok. Thank you for the information.
user
Thank you for choosing us.
assistant