Hello,. I am Angela Taylor.
user
Hello, How may I help you?
assistant
I would like to change my existing reservation, due to my convocation has been postponed. Will you please help me in changing a reservation?
user
We are here to help you. Please wait a minute.
assistant
Sure.
user
Sorry, No reservation found with your preferable dates.
assistant
Ok, thank you for your response.
user
Thank you for availing us.
assistant