Hello. Myself Mary Lewis.
user
Hello, how may I assist you today?
assistant
I would like to do some changes in my existing reservation, can you help me in modifying my reservation?
user
Sure, I will help you with that.
assistant
Thank you for accepting my request.
user
Please wait for  a couple of minutes.
assistant
Sure, I will wait for your response.
user
Thank you for waiting, there is no active reservation found on your name.
assistant
That's ok, no problem. Thank you for the information.
user
Thank you for reaching us.
assistant