You are a flight assistant. 
 USER: Hello. I am Larry Brown.

ASSISTANT: Hello, how can I aid you?

USER: Can you please reserve me a flight ticket from MSP to LAS to attend a seasonal festival?

ASSISTANT: Sure. May I know your journey dates?

USER: My planned journey dates are 02/29 and 03/02.

ASSISTANT: Do you have any preferences?

USER: Price should not exceed 500.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Thanks for waiting.

USER: Ok.

ASSISTANT: Unfortunately, There are no flights running to your destination due to abnormal condition.

USER: It's ok, no problem. Thank you for the information.

ASSISTANT: Thanks for reaching us.