Hello,.
user
Hello, how may I serve you?
assistant
Can you please help me in changing my existing reservation, as my exam got postponed. Please help me with this?
user
Sure, I will help you. Please provide the name on which ticket was reserved.
assistant
Sure, I made a reservation on he name of Shirley Clark.
user
Sorry, there is no active reservation existing on your given name.
assistant
Ok, no issues. Thank you.
user
You are welcome, have a nice day.
assistant