Hello.
user
Hello, how can I help you today?
assistant
I am George Taylor. Due to my health issues I would like to change my recent reservation which I have done last week to Denver. Can you help me to change my existing reservation?
user
Sure, Please wait I will get back to you.
assistant
Ok, please take your time.
user
Thanks for waiting, no flight reservation found with you given name.
assistant
Its ok, it might be done with another service. Anyway thank you for your services.
user
Thanks for choosing us.
assistant