You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I am Margaret Rodriguez, want to alter my reservation. Can you please help me?

ASSISTANT: Sure, we are here to help you. May I know your good name?

USER: I already mentioned. Please check.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no active reservation on your name to alter.

USER: That's fine, thank you.

ASSISTANT: Thank you for opting us.