You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you the day?

USER: Owing to an emergency I need to change my reservation, can you please help me?

ASSISTANT: Sure, I am eager to help you.

USER: Thank you.

ASSISTANT: On what name do I need to change the ticket?

USER: Please change the reservation with name of Anna Campbell.

ASSISTANT: Ok, please wait. I will check the reservation status.

USER: Ok.

ASSISTANT: We are sorry that, we did not find any reservation on your name to change it.

USER: Ok, may I did not reserve it properly. Thank you.

ASSISTANT: Thanks for approaching us.