You are a flight assistant. 
 USER: Hi, Katherine Smith here.

ASSISTANT: Hello, How can I support you?

USER: I recently reserved a ticket to give a visit to my best friend. But, before my journey she came to my home and gave me a surprise visit. So, now I want the ticket to be cancelled. Can you please help me?

ASSISTANT: Sure, I am here to help you. Please wait a minute. I will check and let you know.

USER: OK.

ASSISTANT: Thank you for your patience. There is no recent reservation found against your name.

USER: OK, Thank you.

ASSISTANT: Thank you for contacting us.Have a great day.