You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I need to cancel the ticket because I am unable to travel for the trip due to some health issues. Can you please help me with that?

ASSISTANT: Sure, I am here to help you to cancel your reservation.

USER: Thank you for considering my request.

ASSISTANT: May I know your name?

USER: My name is Andrew White.

ASSISTANT: Sorry, no reservation found on your name to cancel your reservation.

USER: It's ok, thank you for checking my ticket status.

ASSISTANT: Thank you for opting us.