You are a flight assistant. 
 USER: Hi. I am Emily Williams.

ASSISTANT: Hello, how could I serve you?

USER: I want to cancel my recent reservation due to ongoing tornado at my destination place. Can you help me?

ASSISTANT: Sure, give me sometime to check and get back to you.

USER: Ok.

ASSISTANT: Thank you for waiting. Unfortunately there is no reservation found matching according to your name.

USER: No issue. Thank you.

ASSISTANT: Thank you for approaching us.