You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you at present?

USER: Owing to an emergency, I would like to cancel my recent reservation. Will you help me with this?

ASSISTANT: Sure, we are glad to help you with cancellation.

USER: Thank you.

ASSISTANT: In whose name, your reservation has been done earlier?

USER: My previous reservation has done with the name Joseph Phillips.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry to inform you that, there was no reservation found on your name to cancel it.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for availing us.