You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to cancel my recent reservation because my friends cancelled the tour due to some problems. Can you please help me with it?

ASSISTANT: May I know your name please?

USER: My name is Helen Mitchell.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Unfortunately there is no reservation found with your given name.

USER: OK, not an issue. Thank you for the information.

ASSISTANT: Thank you for availing us.