You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I have cancelled my trip because I am unable to travel due  to some health issues. Can you please help me to cancel the ticket?

ASSISTANT: Sure, please share me your good name.

USER: I am happy for your quick response. My name is Robert Evans.

ASSISTANT: Please wait for a while. Sorry to say that, there is no active reservation found on your good name.

USER: It's ok, not a problem with that. Anyhow thank you for checking and providing the information.

ASSISTANT: Thank you for availing us.

USER: You are welcome.