You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I reach out to you?

USER: I am Andrew Campbell. I want to cancel my recent reservation as I am no issued with leave. Please help me out with cancellation.

ASSISTANT: Sure, let me go through the reservation list and get back to you.

USER: Ok.

ASSISTANT: There is no reservation found on the name you provided.

USER: That's fine, thank you.

ASSISTANT: Thank you for approaching us.