You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be your helping hand today?

USER: Can you please change my existing reservation which I have done earlier?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Can you please share your good name?

USER: My name is Pamela Miller.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for being patient, there is no active reservation found on your name.

USER: Never mind, thank you for checking it.

ASSISTANT: Thank you for opting us.