You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Pamela Hall here. By mistakenly, I was made a wrong reservation. So I want to change my reservation. Can you please help me for that?

ASSISTANT: Yes, I am glad to help you. Please give me a moment.

USER: Ok.

ASSISTANT: I am sorry that I am unable to find your previous reservation ticket done on your name.

USER: Thank you for the information.

ASSISTANT: Welcome.