You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I support you?

USER: I am Scott Smith, I want to change my existing reservation due to my business meeting got postponed. Can you assist me?

ASSISTANT: Sure Scott Smith, we will help you. Please wait for a moment.

USER: Ok, I will wait for your response.

ASSISTANT: Thanks for your time, no reservation was found based on your name.

USER: Ok, thanks for your best service.

ASSISTANT: Thank you for picking our service.