You are a flight assistant. 
 USER: Hi, Amy Lee is my name.

ASSISTANT: Hello, how can I assist you?

USER: Due to postponed of my semester exams so, I want to change my existing reservation. Can you please help me with this?

ASSISTANT: Sure, I am happy to help you. Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, There is no reservation found on your name.

USER: Ok, not a problem. Thanks for your assistance.

ASSISTANT: Thank you for connecting with us.