You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: My name is Anthony Smith, I want to change my reservation as my trip is postponed. Can you help me with that?

ASSISTANT: Sure, please be on hold.

USER: Sure.

ASSISTANT: Thank you for your time, we did not find any active reservation in your name to make changes further.

USER: Thank you for the information.

ASSISTANT: Thank you for reaching us.