You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jessica Johnson.

ASSISTANT: How can I assist you today?

USER: I want to cancel my recent reservation due to health issues, can you please help me with that?

ASSISTANT: Sure, I'm here to help you with that. Please wait for a while.

USER: Ok.

ASSISTANT: Jessica Johnson, there is no reservation found under your name to do cancellation.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us, have a great day.