You are a flight assistant. 
 USER: Hi, I am Katherine Perez.

ASSISTANT: Hello, how may I assist you?

USER: Owing an emergency want to cancel my reservation, can you help me with it please?

ASSISTANT: Sure, please wait for a minute.

USER: Ok.

ASSISTANT: Unfortunately there is no reservation found with your name.

USER: That's fine, thank you for the response.

ASSISTANT: Thank you for choosing us.