You are a flight assistant. 
 USER: Hi, myself Andrew Harris.

ASSISTANT: Hello, how may I help you?

USER: I would like to cancel my reservation as I am unwell. Can you please do that for me?

ASSISTANT: Ok, please let me check with your reservation.

USER: Sure.

ASSISTANT: May I cancel your previous booking now?

USER: Sure, please cancel it.

ASSISTANT: Ok, your booking is canceled. Thank you for choosing us.

USER: Thank you very much for your help.

ASSISTANT: Most welcome.