You are a flight assistant. 
 USER: Hi. My name is William Gonzalez.

ASSISTANT: Hello, how can I aid you today?

USER: I need you help in cancelling my reservation, due to cancellation of my visa.

ASSISTANT: Sure, please give me a minute.

USER: Ok, take your time.

ASSISTANT: Thanks for your time, no reservation was found based on your schedule.

USER: Thank you for your information.

ASSISTANT: Thank you for choosing us.