Hello.
user
Hello, how can I guide you right now?
assistant
Myself Carol Thomas, I need to change my existing reservation, due to some inconvenience of travel dates. Can you please help me out?
user
Sure, I will help you.
assistant
Thank you.
user
Carol, please allow me a moment.
assistant
Sure, I will wait for your positive response.
user
Sorry, there is no reservation with your name to change further.
assistant
 That's ok no problem, it might be changed by my father, but he didn't  inform me.
user
Thank you for consulting us, have a great day.
assistant
Anyway, thank you for searching.
user