You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How can I assist you?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you please help me?

ASSISTANT: Ok, may I know your name?

USER: I am Christine Clark.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name to cancel.

USER: It's ok, not a problem. Thanks for your quick response.

ASSISTANT: Most welcome.