You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Timothy Brown.

ASSISTANT: How may I assist you?

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

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Sorry, there are no reservation found on your name.

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

ASSISTANT: Thank you for choosing us.