You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

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

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please help me with your name.

USER: I am Stephanie Carter.

ASSISTANT: Stephanie Carter, I am really sorry to inform you that there is no booking found on your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us. Have a great time.