You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Lisa Harris.

ASSISTANT: How can I help you?

USER: I need to cancel my recent reservation due to cancel of Movie shooting in Austin. Could you please help me in doing that?

ASSISTANT: Sure, give me a minute.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: No problem. Thank you for your valuable information.

ASSISTANT: Thank you for opting us.