You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I have some personal matters that need fixing so I need to change an existing reservation. Can you please help me in that?

ASSISTANT: Sure, may I know your name?

USER: My name is Jessica Turner.

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

USER: Ok, no worries. Thanks for your kind information.

ASSISTANT: Thank you.