You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me to change my reservation to some other dates?

ASSISTANT: Sure, may I know your good name please?

USER: Sure, my name is Jerry Edwards.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry Jerry, there is no active reservation found under your name in our records.

USER: Not a problem, thank you.

ASSISTANT: Most welcome.