You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Donald Harris here.

ASSISTANT: How can I assist you Donald Harris?

USER: Can you please cancel my recent reservation? While I'm unable to catch the flight right now.

ASSISTANT: Sure, I will help you with this. There is no active reservation found under your name in our database.

USER: That's ok, thank you for your time.

ASSISTANT: Thank you for providing information.