You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Ryan Campbell.

ASSISTANT: How can I aid you at this moment?

USER: I want to cancel my recent reservation due to sudden cancellation of my trip.Can you help me?

ASSISTANT: Sure, I will help you with this. Please give me a moment to check your reservation status.

USER: Ok.

ASSISTANT: Ryan Campbell, there is no active reservation found under your name in our database.

USER: That's Fine. Thank  you for the information.

ASSISTANT: Thank you for utilising our service.