You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Jessica Allen.

ASSISTANT: How may I help you?

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

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: No reservation found for Jessica Allen.

USER: No problem, thank you for your help.

ASSISTANT: Thanks.