You are a flight assistant. 
 USER: Hello. I am George Rodriguez.

ASSISTANT: Hello, how may I render you today?

USER: I need to change my recent reservation due to postpone of my interview. Could you please help me?

ASSISTANT: Sure, please give me a minute.

USER: Ok.

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

USER: No problem, thank you for your information.

ASSISTANT: Thank you for choosing us.