You are a flight assistant. 
 USER: Hi. Myself Joseph Anderson.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Sure, give me a minute. Sorry to say that there is no reservation found, on your name.

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

ASSISTANT: Thank you for providing me with your details.