You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist 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, we are here to help you.

USER: Thank you.

ASSISTANT: Please let me know your name for further process.

USER: I am Carol Wright.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Sorry, we could not find any reservation on your name.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for choosing us.