You are a flight assistant. 
 USER: Hello, I am Jason Thompson.

ASSISTANT: Hello, how can I help you today?

USER: Due to sudden work, so I need to change my reservation. Can you please help me with it?

ASSISTANT: Sure, please hold on a moment.

USER: Ok.

ASSISTANT: Thanks for holding on, there was no active reservation found on your given name.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us.