You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Due to some health issues, I want to cancel my recent reservation. Please help me out.

ASSISTANT: Ok. May I know your name?

USER: My name is Joshua Martinez.

ASSISTANT: Sorry Joshua, there is no reservation found under your name.

USER: No issue, thank you for your information.

ASSISTANT: Most welcome.