You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I address you today?

USER: As my appointment with a lawyer got postponed, I would like to change my reservation which was made on the name of Jeffrey Smith. Can you help me with it?

ASSISTANT: Sure, just a moment I will check the reservation list.

USER: Sure.

ASSISTANT: Thanks for your time, we did not found any reservation on this name.

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

ASSISTANT: Thanks for approaching us.