You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what help that you are expecting from us?

USER: I want to cancel my recent reservation due to some health issue.Can you help me?

ASSISTANT: Sure, I am gleeful to help you with the ticket cancellation process. Can you please let me know your name to check the status?

USER: Sure, I am Alexander Martin.

ASSISTANT: Ok, please hold on for a minute.

USER: Ok, take your own time.

ASSISTANT: I am really happy to inform you that, I have found your previous ticket and successfully cancelled your ticket.

USER: Thank you for cancelling my ticket.

ASSISTANT: My pleasure to help you. Thank you for choosing us.