You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you cancel my ticket? Because I need to attend an emergency meeting.

ASSISTANT: Sure, can I have your name please?

USER: I am Jessica Allen.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, no flight reservation found with your given name.

USER: Ok, Thanks for the quick response.

ASSISTANT: Thank you for choosing us.