You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Ronald Green.

ASSISTANT: How can I help you at this moment?

USER: Can you help me to cancel my recent reservation?

ASSISTANT: Sure, I will help you with this. Please be on hold for a moment.

USER: Sure, take your time.

ASSISTANT: Ronald Green, I didn't find any active reservation under your name in our database.

USER: Ok, thank you for your service.

ASSISTANT: Thank you for utilising our service.