You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I help you?

USER: I want to meet my cousins at Denver.

ASSISTANT: Ok, please provide your journey details.

USER:  I will flew from NV-LAS on 08/25  to CO_DEN on 08/27.

ASSISTANT: Can you please provide your name?

USER:   I am Kathleen Roberts.

ASSISTANT: Sorry, there is no flight found on that date. Thanks for choosing us.

USER: Thank you for your service.