Hello.
user
Hello, how can I assist you?
assistant
Can you help me to change my reservation which was done two days ago?
user
Sure, I am here to help you. May I know your name to check the reservation list?
assistant
Thank you. My name is Benjamin Smith.
user
      Ok, please wait a minute I will get back to you with the present status.
assistant
Sure.
user
Thank you for waiting, sorry no reservation found on your name.
assistant
Ok, thank you for the information.
user
Thank you for opting us, have a nice day.
assistant