You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Can you please help me to cancel my ticket due to health problem?

ASSISTANT: Sure, I will help you on that. Could you please provide your name to check your previous reservation status?

USER: My name is Carol Thompson.

ASSISTANT: Ok Carol, please hold on to check.

USER: Sure.

ASSISTANT: We regret that, there is no reservation found with your name.

USER: Ok, it's alright, thank you for your service.

ASSISTANT: Thank you for reaching us.