Hello. Robert Gonzalez here.
user
Hello Robert, how may I aid you?
assistant
Due to sudden change in my trip plan, I want to change my reservation. Can you please help me for that?
user
Sure, wait a moment to check your previous reservation status.
assistant
Ok.
user
Sorry Robert, there is no reservation found under your name.
assistant
Ok. Thank you for helping me.
user
Thank you for using our service, have a nice day.
assistant