You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I guide you?

USER: I am Jacob Hernandez. I want to cancel my recent reservation as my exams postponed, can you please help me with that?

ASSISTANT: Sure, Jacob Hernandez. Give me a moment to check your details.

USER: Sure.

ASSISTANT: Unfortunately there is no reservation found on your name to cancel.

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thank you for contacting us.