You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I need to cancel my recent reservation as my conference got cancelled.

ASSISTANT: Sure, may I know your name?

USER: My name is Stephanie Carter.

ASSISTANT: Please wait a moment let me check.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry to inform you that there is no reservation found against your name.

USER: Thank you for your help.

ASSISTANT: Thanks for approaching us.