Hello.
user
Hello. How may I assist you?
assistant
I am Anna Turner. Can you please reserve a flight ticket for me from New York to Los Angeles?
user
Yes, can you tell me your dates of travel?
assistant
The preferable travel dates are 05/13 and 05/15.
user
Ok, can I know your nearest airport codes?
assistant
The boarding and landing airport codes are LGA and LAX.
user
Give me a moment.
assistant
Ok, take your time.  Make sure that the price limit is 500 or less.
user
Sorry to inform you that there are no flights found on your requested dates.
assistant
It's ok, thank you for searching the flights.
user
Thank you for contacting us.
assistant