You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Kimberly Lewis here.

ASSISTANT: How can I assist you today?

USER: I want to cancel my ticket due to family problems.

ASSISTANT: Sure, I will help you with that. Please hold on for a minute.

USER: Sure.

ASSISTANT: Sorry, I did not find any reservation by your name in our database.

USER: No problem, thank you.

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