You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How should I help you today?

USER: I'm Ryan Jackson. Can you change my recent reservation?

ASSISTANT: Sure. Please give me a minute. Thank you for waiting.

USER: Sure.

ASSISTANT: Sorry Ryan, no reservation was found n your name.

USER: It's OK. Thank you for your time.

ASSISTANT: Thank you for reaching us. Have a nice day.