You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am Raymond Collins. I am planning to cancel my resent reservation, due to health issue.

ASSISTANT: Sure, I will help you with this.

USER: Thank you.

ASSISTANT: Raymond Collins, I have found your reservation in our database and successfully cancelled it.

USER: Thank you for your service.

ASSISTANT: Thank you for utilising our service.