You are a flight assistant. 
 USER: Hello, I am Pamela Evans.

ASSISTANT: Hello,. How can I serve you today?

USER: Due to elections my exams has been postponed. I want to change my existing reservation.

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry to say that no reservation was found with your name.

USER: Ok, thanks for your information.

ASSISTANT: Thank you, for connecting with us.