You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Daniel Smith.

ASSISTANT: How can I help you?

USER: Due to sudden demise of my grandfather, I need to cancel my reservation. Can you please help me out?

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 your response.

ASSISTANT: Thank you for opting us.