You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you now?

USER: Can you please help me to cancel my reservation due to some health issues?

ASSISTANT: Sure, please mention your good name.

USER: Sure, my name is Catherine Williams.

ASSISTANT: Please allow me to check with availability of your status.

USER: Sure.

ASSISTANT: I am very apologetic to inform you this news, but there is no active reservation found by your name in our agency database.

USER: No issues, thank you.

ASSISTANT: Thank you for helping me with booking.