You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Laura Thomas, I want to book a flight ticket from LAS - ATL.

ASSISTANT: On which dates you like to travel?

USER: My travelling dates are 08/21 and 08/23.

ASSISTANT: I am sorry no flights  found on your route.

USER: Not an issue, thank you for the help.

ASSISTANT: Thanks for choosing us.