Hello.
user
Hello. How can I assist you today?
assistant
I want to change my existing reservation, as my exams got postponed suddenly. Can you please help me with this?
user
Sure, please mention your name to proceed further.
assistant
I am Thomas Phillips.
user
Sorry Thomas, no reservation found on your name.
assistant
Ok, no problem. Thank you for your information.
user
You are welcome.
assistant