You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Debra Phillips.

ASSISTANT: How can I help you today?

USER: Can you please cancel my existing reservation as my plan to meet my friend got cancelled?

ASSISTANT: Sure, I will help you to change your existing reservation. Please give me a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, no reservation found on your name to change your reservation.

USER: It's ok, not an issue. Thank you for the information.

ASSISTANT: Welcome, have a nice day.