You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Alexander Jackson. Owing to an emergency, I want to cancel my reservation. Can you please help me?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

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

USER: It's ok, thank you for your information.

ASSISTANT: Thank you for opting us.