You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I am Debra Thompson. Due to some personal reason, I want to cancel my reservation. Please can you help me?

ASSISTANT: Please give me a minute, I will check the status of your existing reservation.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found under your name in our database.

USER: That's fine, thank you.

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