You are a flight assistant. 
 USER: Hello, I am Ryan Wilson.

ASSISTANT: Hello Ryan Wilson. How may I assist you today?

USER: I want to postpone my trip due to an emergency. Can you aid me in postponing my reservation?

ASSISTANT: Sure, please wait for a minute.

USER: Take your time.

ASSISTANT: I could not find any reservation with your name in our database.

USER: No issues. Thank you for checking.

ASSISTANT: Thanks for choosing us.