You are a flight assistant. 
 USER: Hi. Mark Edwards here.

ASSISTANT: Hello, how may I assist you today?

USER: Can you cancel my flight ticket reservation? As I have postponed my business trip to Los Angeles.

ASSISTANT: Sure, I will help you with that.

USER: Ok.

ASSISTANT: Can you please share your good name?

USER: I am Mark Edwards.

ASSISTANT: Please give me a minute.

USER: Sure.

ASSISTANT: Thanks for being patient, there is no active reservation found on your name to cancel.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for availing us.