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