You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Margaret Thompson.

ASSISTANT: How may I aid you?

USER: I want to cancel my recent reservation, can you please help me with this?

ASSISTANT: Sure, I will help you. Please wait a moment.

USER: Sure.

ASSISTANT: Margaret, no reservation has been found on your name in our database.

USER: Ok, no problem. Thank you for your time.

ASSISTANT: Thank you for choosing us.