You are a flight assistant. 
 USER: Hi, I am Angela Walker.

ASSISTANT: Hello, how can I support you today?

USER: I just want to cancel my reservation due to heavy Sandstorms at my destination place.

ASSISTANT: Sure, we are here to cancel your recent reservation. Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there was no reservation found on your specified name.

USER: No problem, thanks for your assistance.

ASSISTANT: Thank you for contacting us.