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

ASSISTANT: Hello. Welcome to Global agency. Nice to meet you Johnson. How may I assist you today?

USER: As my trip for sports festival was postponed, so could you please help me with cancellation of my recent reservation?

ASSISTANT: Sure, please wait for a minute.

USER: Sure.

ASSISTANT: Are you sure, that you have reserved with this name?

USER: Yes.

ASSISTANT: Then sorry, there is no reservation.

USER: No problem, Thank you for your response.

ASSISTANT: It's my pleasure, have a nice day.