You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Charles Rodriguez. I would like to cancel my reservation as I am leaving for delegates meet, can you please help me out?

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found basis on your details.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for reaching us.