Hi. I am Christopher Smith.
Hello, how can I oblige you?
As my semester exams got postponed, I need to change my reservation. Can you help me out?
Sure, I will help you.
Thank you.
Please wait for a moment, I will check your previous reservation.
Sure, I will wait for your response.
Thank you for your time, there is no reservation found on your name.
Ok, not an issue. Thank you for your kind information.
Thank you for availing us.