You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Jeffrey Garcia. As my friend's wedding occasion has been changed, help me in cancelling my reservation.

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: There is no reservation on your name.

USER: No issues, thank you for your response.

ASSISTANT: Thanks for choosing us.