You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, tell me how may I assist you?

USER: I am Charles Collins.

ASSISTANT: How are you Charles?

USER: I am doing good, thank you for asking. What about you?

ASSISTANT: I am also fine.

USER: I have cancelled my holiday trip, could you help me to cancel my reservation?

ASSISTANT: Sorry to say,  Charles,there is no flight ticket found on your  name.

USER: Oh! that's fine. Thank you for your quick response.

ASSISTANT: Thank you for contacting us Charles.