Hello, I am Robert Garcia.
user
Hello. How may I help you?
assistant
Due to sudden change in my trip I need to change my existing reservation. Can you help me changing my reservation?
user
Ok. I will help you.
assistant
Thank you.
user
Please wait a minute.
assistant
Sure.
user
Thanks for waiting. There is no reservation found on your name.
assistant
No problem. Thank you for the information.
user
Thank you.
assistant