You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Charles Evans.

ASSISTANT: How may I guide you?

USER: Owing to an emergency, I need to cancel my journey. Can you please cancel my reservation?

ASSISTANT: Sure, I am here to help you. Please hold on a moment.

USER: Ok, take your time.

ASSISTANT: Charles, no reservation has been found on your name in our records.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for choosing us.