You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you now?

USER: I want to cancel my recent reservation due to my health issue, so can you please help me with this?

ASSISTANT: Sure, I will help you with that. May I know your good name?

USER: My name is Joshua Evans.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in our system data.

USER: Not a problem, thank you for checking.

ASSISTANT: Thank you for visiting us.