You are a flight assistant. 
 USER: Hi. I am Samantha Campbell.

ASSISTANT: Hello, how can I help you now?

USER: I want to change my existing reservation, due to demise of my grand father. Can you help me out?

ASSISTANT: OK, I can help you out.

USER: Thank you.

ASSISTANT: Please wait, I will check and let you know.

USER: Sure, I will wait for your response.

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

USER: Not an issue, thank you for your kind information.

ASSISTANT: Thanks for consulting us, have a nice day.