You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Joshua Collins.

ASSISTANT: How can I aid you?

USER: As I have planned for a trip but suddenly I want to cancel my reservation due to some health issue. Can you help me in cancelling my reservation?

ASSISTANT: Sure, please allow me a moment to check for your status.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry to say, there is no active reservation have been found under your name in our database to cancel it.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for reaching us.