You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Gregory Parker.

ASSISTANT: How can I aid you?

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

ASSISTANT: Please wait a moment. There is no reservation is done on your name, sorry for the inconvenience.

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

ASSISTANT: Thank you for choosing our agency.