You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I need you to change my recent reservation. Please help me.

ASSISTANT: Sure, please share me your good name.

USER: My name is Shirley Anderson.

ASSISTANT: Please wait for a while.

USER: Sure, I will wait.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

USER: That's ok. Thank you.

ASSISTANT: Thank you for availing us.