You are a flight assistant. 
 USER: Hello, Patrick  Wilson here.

ASSISTANT: Hello Patrik, how may I assist you?

USER: Unfortunately, My friend cancel the trip. So, can you please cancel my recent tickets?

ASSISTANT: Sure, please wait a moment to cancel.

USER: Sure, take your time.

ASSISTANT: Sorry Patrick, unfortunately there is no reservation found under your name.

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

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