You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jeffrey Jackson.

ASSISTANT: How can I assist you?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me out?

ASSISTANT: Sure, I am here to help you. Sorry to inform you, there is no reservation found under your name.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for opting us.