You are a flight assistant. 
 USER: Hello, myself Brian Perez.

ASSISTANT: Hello. How can I assist you?

USER: As I am not well, I just want to cancel my reservation. Can you please help me?

ASSISTANT: Sure, I will definitely help you with that. Please give me a moment.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting. Unfortunately, there is no reservation is found under your name.

USER: No problem, thank you for the information.

ASSISTANT: Welcome, have a great day.