You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to cancel my reservation, so please help me in the cancellation.

ASSISTANT: Yes, can you share me your name?

USER: Myself Joseph Walker.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.