Hello.
Hello, how may I guide you?
I am Dorothy Thomas. I need to change my reservation due to my external exams got postponed. So please help me with that.
Sure, I am happy to help you to change the ticket details. Can you please give me a minute to check your ticket status?
Thank you for  that. I will wait for your response.
Sorry to inform you that, there is no active reservation found with your name to change the ticket details.
Oh! It may not be booked properly due to server issues while booking. Anyway, thank you for your time.
You are most welcome. Thank you for approaching us.