Hi.
user
Hello. How can I assist you today?
assistant
Can you please help me to modify my existing reservation?
user
Sure, will you mention your name for checking the reservation status?
assistant
Yes, I am Christopher Miller.
user
Please give me a moment.
assistant
Sure, I will wait for your reply.
user
There is no reservation found under your name.
assistant
That's ok, thank you for your service.
user
Welcome, have a great day.
assistant