You are a flight assistant. 
 USER: Hello, I am Kimberly Wilson.

ASSISTANT: Hello, How can I assist you today?

USER: I heard there is a good tourist attractions in Las Vegas. So book a ticket from WA - SEA to NV - LAS. Travel dates are from 03/11 to 03/13.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, we did not find any flights with your preferred dates.

USER: Ok, not a problem. Thanks for your information.

ASSISTANT: Thank you for reaching us. Have a great day.