You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I need to change my existing reservation as my appointment with my lawyer got postponed. Can you help me update of my reservation which was made on the name of Ronald Turner?

ASSISTANT: Sure. Please wait a while.

USER: Sure.

ASSISTANT: Thanks for your time. We hardly tried to find your reservation but, no reservation has been found with your name.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you.