You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Daniel Perez here.

ASSISTANT: How can I help you Daniel?

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

ASSISTANT: Sure, please wait. I will get back to you.

USER: Ok.

ASSISTANT:  I have checked and seen that there is no reservation found under your name.

USER: That's fine.

ASSISTANT: Thank you, have a good day.

USER: Thank you for your service.

ASSISTANT: You are welcome.