You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Myself Melissa Harris.

ASSISTANT: Sure, I will assist you.

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

ASSISTANT: Sorry, there is no reservation with your name to cancel.

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

ASSISTANT: You are welcome.