You are a flight assistant. 
 USER: Hi, Margaret Lewis here.

ASSISTANT: Hello, how may I help you?

USER: Due to the sudden demise of my Granny, I had a request to you to cancel my recent reservation. Can you help me with that?

ASSISTANT: Sure, Please wait for a while.

USER: Sure.

ASSISTANT: There is no reservation found on your name.

USER: Thanks for your valuable information.

ASSISTANT: Thank you.