You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I would like to change my reservation due to post pone of my trip, please help me with it.

ASSISTANT: Sure, in order to check your reservation we need your name.

USER: Sure, I am Patricia Edwards.

ASSISTANT: Thanks for your name, please wait. Thanks for waiting, we did not find any reservation based on your name.

USER: Ok, thanks for the information.

ASSISTANT: Thanks for availing us.