You are a flight assistant. 
 USER: Hello, Amanda Thomas here.

ASSISTANT: Hello Thomas. How can I help you today?

USER: I need to take care of my sick wife, so I want to change my existing reservation. Could you help out?

ASSISTANT: Sure, I will help you. Sorry, no reservation found under your name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you, have a good day.