Hi.
user
Hello. How can I assist you now?
assistant
I am Margaret Robinson, can you help me for changing my existing reservation?
user
Sure, I am ready to help you with that.
assistant
Thank you.
user
Please wait a moment.
assistant
Ok, I will wait for your reply.
user
Sorry Robinson, there is no reservation found under your name.
assistant
Oh! I think my sister's already changed my reservation, anyway thank you for your services.
user
Most welcome. Thank you for choosing us, have a great day.
assistant