You are a flight assistant. 
 USER: Hi. I am Charles Garcia.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Can you help you cancel my reservation, which I have done previously?

ASSISTANT: Sure Charles Garcia, I am ready to help you with that.

USER: Thanks.

ASSISTANT: Please wait a moment to check your reservation status.

USER: Sure, take your time.

ASSISTANT: Congrats Charles Garcia, I have found your reservation. Do you really want to cancel or do some changes?

USER: It's ok, thanks for checking. Yes, please cancel it.

ASSISTANT: Ok Charles Garcia, your reservation has successfully cancelled.

USER: Thank you.

ASSISTANT: Thank you for choosing us, have a good day.