You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Donald Martinez here. I want to cancel my reservation due to my wife's health issues. Can you help me?

ASSISTANT: Please wait a while.

USER: Ok, take your time.

ASSISTANT: There is no reservation on your name in our database.

USER: Oh! That's fine, thank you for checking.

ASSISTANT: Thank you for opting us.

USER: Most welcome.