You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Rebecca Carter.

ASSISTANT: How can I aid you?

USER: I need to cancel my reservation due to my planned trip got cancelled. So please help me with that.

ASSISTANT: Sure Carter, I will help you to cancel your reservation.

USER: Thank you.

ASSISTANT: Please give me a moment to check your previous reservation.

USER: Sure, take your time.

ASSISTANT: Sorry Carter, I didn't find any active reservation on your name to cancel.

USER: Oh! It may not be booked properly. Anyway, thank you for your time.

ASSISTANT: Welcome, have a nice day. Thank you for choosing us.

USER: Most  welcome.