Hello.
user
Hello.
assistant
Myself Mark Hall.
user
How may I assist you today?
assistant
Due to some seminars, I am going to change my existing reservation. Could you please help me for changing the reservation?
user
Sure, I am here to help you.
assistant
Ok, I will wait for your response.
user
Hall, sorry to say you that, there is no existing reservation found on your name in our database.
assistant
No problem, thank you very much for your help.
user
Thank you for approaching us.
assistant