Hi, I am Melissa Brown.
user
Hello, How can I serve you?
assistant
Owing to an emergency, my meeting with client got postponed. So I request you to change my existing reservation.
user
Sure, Please wait a second.
assistant
Sure.
user
Sorry, No reservation found on your name.
assistant
Ok, not an issue. Thank you for your assistance.
user
Thank you for opting us.
assistant