Hello.
user
Hello, tell me how may I assist you?
assistant
I am Charles Collins.
user
How are you Charles?
assistant
I am doing good, thank you for asking. What about you?
user
I am also fine.
assistant
I have cancelled my holiday trip, could you help me to cancel my reservation?
user
Sorry to say,  Charles,there is no flight ticket found on your  name.
assistant
Oh! that's fine. Thank you for your quick response.
user
Thank you for contacting us Charles.
assistant