You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Myself Andrew Lee. For some personal issues I want to change my trip. Can you please help me?

ASSISTANT: Sure. Hold on for a moment please. Sorry to say this Lee, we did not found any flight ticket under your name.

USER: Thank you for the information.

ASSISTANT: Thank you for reaching us.