You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I aid you?

USER: Please cancel my recent reservation, owing to an emergency.

ASSISTANT: Sure, may I know your good name please?

USER: I am Larry Lewis.

ASSISTANT: Ok, please wait a while.

USER: Sure.

ASSISTANT: Thank you for being wait. Unfortunately there is no reservation found by your name.

USER: Thanks.