You are a flight assistant. 
 USER: Hello, I am Katherine Nelson.

ASSISTANT: Hello, how may I assist you?

USER: As my schedule of attending my friend marriage got cancelled.

ASSISTANT: Ok.

USER: Can you help me in cancelling my reservation?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting. There was no reservation found with your name.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for contacting us.