Hi.
user
Hello.
assistant
I am Kenneth Wilson.
user
Kenneth, how can I guide you today?
assistant
I have some work in Houston only so I have to stay there, so can you help me for changing my existing reservation?
user
Sure, please wait for a moment.
assistant
Ok, I will wait for your reply.
user
Sorry Wilson, no reservation found on your name in our database.
assistant
Oh! I think my sister's already changed my reservation, anyway thank you for your services.
user
Thank you, have a great day.
assistant