You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Melissa Collins.

ASSISTANT: How can I help you with today?

USER: I want to cancel my recent reservation.

ASSISTANT: Sure, I can help you with that. Please allow me a moment to check the details.

USER: Sure.

ASSISTANT: Melissa, I have found your details. I have successfully cancelled your reservation.

USER: Thank you for your help.

ASSISTANT: You are most welcome.