You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jonathan Hill.

ASSISTANT: How may I help you today?

USER: Due to sudden demise of my great grandfather, I need to change my reservation. Can you please help me with that?

ASSISTANT: I am happy to help you, please wait a moment.

USER: Ok.

ASSISTANT: Thanks for your time, there is no reservation found on your name to change it.

USER: Ok, no issues. Thank you for your quick response.

ASSISTANT: Thanks for reaching us, have a good day.