You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Charles Rodriguez here.

ASSISTANT: How can I guide you?

USER: Due to some heath issues, I am unable to travel. Can you cancel my ticket?

ASSISTANT: Sure, give me a minute.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: It's ok.

ASSISTANT: Thank you for opting us.

USER: Thank you for your help.