You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,. How may I assist you?

USER: I have a earlier reservation to spend my weekend with my family, due to fire accident in my company, I want to change my reservation. Can you please help me with that?

ASSISTANT: May I know your name?

USER: My name is Justin Lewis.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: I regret, no reservation found.

USER: Ok, no issue.

ASSISTANT: Thanks.

USER: Thank you.