You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Raymond Nelson here.

ASSISTANT: How may I assist you?

USER: Due to health issues, I want to cancel my trip. Can you please help me in cancelling my reservation?

ASSISTANT: Please wait a moment.

USER: Sure, take your time.

ASSISTANT: Nelson, no reservation has been found on your name.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for choosing us.