You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

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

ASSISTANT: I will help you with that.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Jessica Hill.

ASSISTANT: I am sorry to say that there is no reservation found under your name.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.