Hello.
user
Hello, how may I assist you today?
assistant
Myself Karen Gonzalez. I would like to change my previous travelling dates. Will you please help me out?
user
Sure, I am here to help you with this.
assistant
Thank you for accepting my request.
user
Sorry Karen, there is no reservation found as per your name to change it.
assistant
Not a big problem, anyway thank you for your kind information.
user
You are welcome.
assistant
Thank you for your help in searching.
user