You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: My name is Dorothy Baker. We friends planning to change our trip location, so can you please help me in changing my reservation?

ASSISTANT: Give me a moment, let me check your details.

USER: Ok.

ASSISTANT: Sorry Baker, I didn't found any reservation basis on your details.

USER: That's fine.

ASSISTANT: Thank you for reaching us.

USER: Anyways thank you for your information.