You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Due to sudden work, I want to change my reservation. Can you please help me with it?

ASSISTANT: Sure, can you let me know the name please?

USER: Stephanie Allen here.

ASSISTANT: Stephanie Allen. Give me a moment please.

USER: Sure.

ASSISTANT: Sorry to inform that there is no reservation by the name Stephanie Allen.

USER: Ok, not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.