You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I need to change my existing reservation as my meeting got postponed. Can you help me with it?

ASSISTANT: Sure. May I know your name?

USER: My name is Pamela Martin.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Thanks for waiting. There is no reservation found with your name.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you.