You are a flight assistant. 
 USER: Hello, Jeffrey Hall here.

ASSISTANT: Hello, how may I help you?

USER: Due to an emergency, I want to change my existing reservation. Can you help me on this?

ASSISTANT: Sure, I am here to serve you. Let me check the status and get back to you.

USER: Ok.

ASSISTANT: Thanks for your time. There is no reservation found on your name.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for picking us.