You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dorothy Adams.

ASSISTANT: How can I help you?

USER: I just want to cancel my ticket, can you help me?

ASSISTANT: Sure. Wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found on your name?

USER: Ok, thank you for informing.

ASSISTANT: Thanks for choosing us.