You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I want to cancel my reservation which is done recently due to some problems, can you please help me out?

ASSISTANT: I will help you, can I know your name please?

USER: Sure, my name is Ryan Mitchell.

ASSISTANT: Ok, wait a moment please.

USER: Sure, I will wait.

ASSISTANT: Sorry to say that, there is no reservation found on your name.

USER: Ok, that's fine. Anyways, thank you for your appreciable service.

ASSISTANT: Thank you for approaching us.