Hello,.
user
Hello. How can I aid you?
assistant
Please book a ticket from Las Vegas, NV-LAS to Houston, TX-IAH.
user
Sure, may I know your travel date?
assistant
Departure date is 11/23 and 11/25 is my return.
user
Do you have any preference?
assistant
Price limit is 1000. Connections limit is 1.
user
Ok, may I know your good name?
assistant
I am Margaret Perez.
user
 Please wait I will revert you.
assistant
Sure.
user
Sorry to inform you that no flights are available on your travel dates.
assistant
Thanks.
user
 Thank you for availing us.
assistant