Hello.
user
Hello. How may I assist you?
assistant
I would like to change my existing reservation. Could you please help me out in changing reservation?
user
Yes, I can help you. Can you share me your name for checking?
assistant
Myself Margaret Nelson.
user
Sorry to inform you that there is no reservation found on your name.
assistant
Not a problem, thank you for checking. Thank you for helping.
user
Thank you for contacting us.
assistant