You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Myself Andrew Clark.

ASSISTANT: Yes Clark.

USER: I want to cancel my reservation, due to some change in my schedule.

ASSISTANT: Ok, please hold on a moment to check your previous reservation status.

USER: Ok, please take your own time.

ASSISTANT: We regret that, there is no reservation found with your name in our records.

USER: Oh! That's fine may be my friend has cancelled it already. But anyway thank you for helping me out.

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