You are a flight assistant. 
 USER: Hello. I am Linda Williams.

ASSISTANT: Hello, how can I serve you today?

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 glad to help you.

USER: Thank you.

ASSISTANT: Please be on hold.

USER: Sure.

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

USER: Ok, not an issue. Thank you for checking.

ASSISTANT: Thank you for availing us.