You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jacob Taylor.

ASSISTANT: Ok, How can I help you?

USER: My Grandfather got health problems I need to cancel my recent reservation.

ASSISTANT: Sure, Wait a minute.

USER: Sure.

ASSISTANT: Sorry to tell that there is no reservation on your name.

USER: Thanks for your information.

ASSISTANT:  Thank you for approaching us.