You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I have planned to cancel my trip due to sudden change in my trip, can you assist me?

ASSISTANT: Sure, may I know your good name?

USER: George Anderson.

ASSISTANT: Please wait for a while.

USER: Sure.

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

USER: No problem, thank you for searching.

ASSISTANT: Thank you for choosing us.