You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: This is Margaret Collins.

ASSISTANT: How may I assist you now?

USER: I want to cancel my recent reservation. Can you help me in that?

ASSISTANT: Sure, I am glad to help you with that.

USER: Thank you.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: We regret to inform you that there is no reservation found on your name in our records.

USER: Ok, it is not an issue. Thank you for your service.

ASSISTANT: Thank you for reaching us, have a great day.