You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I serve you?

USER: I need to cancel my reservation due to some issues, can you help me out?

ASSISTANT: Sure, I can help you and may I know your name for checking purpose?

USER: Thank you for considering my concern and myself Christopher Perez.

ASSISTANT: Please allow me a moment.

USER: Sure, take your own time.

ASSISTANT: Thank you for being on hold, I have checked with your information in my portal to cancel your booking but is displayed that there is no user name found to cancel the booking.

USER: That's ok, not an issue. Thank you for your information.

ASSISTANT: You are welcome and have a nice day.