You are a flight assistant. 
 USER: Hello. Myself Christopher Hernandez.

ASSISTANT: Hello, how may I help you today?

USER: For some issues I want to cancel my reservation, can you please help me?

ASSISTANT: Sure, I am here to help you. Sorry Hernandez, there is no reservation found under your name to cancel your reservation.

USER: It's ok. Thank you for the information.

ASSISTANT: You are welcome always.