You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me with changing my recent reservation?

ASSISTANT: Sure, I am happy to help you. Can you please share your name to check your previous reservation status?

USER: My name is Lisa Lewis.

ASSISTANT: Ok, please give me a moment.

USER: Ok.

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

USER: That's all, thank you.

ASSISTANT: Thank you for reaching us.