You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you now?

USER: I want to cancel my reservation which is done recently due to some health issues, can you please help me?

ASSISTANT: Sure, I will help you with that. Please wait a moment.

USER: Sure, I will wait.

ASSISTANT: Can I have your name please to check your reservation status?

USER: Sure, my name is Daniel Jackson.

ASSISTANT: Sorry Daniel, there is no reservation has found under your name to cancel.

USER: Ok, that's fine.

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

USER: Anyways, thank you for your service.

ASSISTANT: Most welcome.