You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: I want to change my existing reservation due to sudden demise of my grand father. Can you please help me with this?

ASSISTANT: Sure, I am here to help you out. Please provide me your name to check the reservation status.

USER: Sure, I am Michelle Lewis.

ASSISTANT: Please allow me a moment.

USER: Sure.

ASSISTANT: Sorry Michelle Lewis, there is no active reservation on your name in our data.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Thank you for reaching us.