Hello, I am Christopher Collins.
user
Hello, how may I assist you today?
assistant
Can you please assist me in changing my reservation?
user
Sure, I am here to assist you.
assistant
Thank you.
user
Give me a minute, I will check and let you know the status.
assistant
Sure.
user
Thanks for your time. There is  no reservation exists with your name.
assistant
It's ok, thank you for your kind information.
user
Thank you for approaching us.
assistant