You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I would like to change my flight reservation as my trip got postponed, can you please help me?

ASSISTANT: Sure, I am glad to help you. May I know your name to check with the status?

USER: My name is Sharon Edwards.

ASSISTANT: Please wait a moment while i check with the status.

USER: Ok.

ASSISTANT: Thank you for waiting. Sharon Edwards, I am afraid that there is no active reservation found under your name to amend.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.