You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I be at your service today?

USER: I am Kimberly Lewis. I have planned to travel to Houston to visit Space centre with my children, but it has been closed due to some security issues. So, please cancel my reservation.

ASSISTANT: Sure, we are here to help you. Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry we couldn't find any reservation against your name.

USER: Thank you for informing me.

ASSISTANT: Thank you for reaching us.