You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Robert Hernandez here.

ASSISTANT: How may I help you?

USER: Can you please help me in cancelling my reservation? as I have some health issues.

ASSISTANT: Sure, please wait for a moment to check your details.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name.

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

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