You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Unfortunately, I want to cancel my recently done reservation. Can you please help me in this condition?

ASSISTANT: Sure, Could you provide me your name?

USER: Sure, myself Gregory Perez here.

ASSISTANT: Perez, sorry no reservation found on your name.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: You are welcome always.