Hello. Matthew Garcia here.
user
Hello, how may I assist you for today?
assistant
 I would like to celebrate my sister's birthday in Las Vegas, can you book me a ticket?
user
Sure, could you please provide your airport codes you want to travel?
assistant
Ok, here are my source and destination codes JFK and LAS.
user
Ok, what dates would you like to travel?
assistant
I would be happy to travel on 07/08 and 07/10.
user
Sorry to say, no flights were found on your preferred dates.
assistant
No issues, thank for your valuable time.
user
Thank you for reaching us, have a nice day.
assistant