You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: Owing to an emergency I need to cancel my reservation so, can you please help me with cancellation?

ASSISTANT: Sure. May I know your name?

USER: Ronald Perez here.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Thanks for waiting. There is no reservation found on your name.

USER: No problem, thank you.

ASSISTANT: Thank you.