You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to change my destination details. Can you change my existing reservation. Can you help me?

ASSISTANT: Sure, may I know your name for checking?

USER: Yes, I am Laura Harris.

ASSISTANT: Give me a minute.

USER: Sure.

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

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.