You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: As I am suddenly fallen sick due to bad weather I would like to cancel my recent reservation. Can you help me with cancellation on the name of Kimberly Lewis?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your given name.

USER: That's Ok, thanks for your assistance.

ASSISTANT: Thank you for choosing us.