You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Stephanie Walker here.

ASSISTANT: How can I help you at this moment?

USER: Can you please cancel my previous booking as I am suffering from fever?

ASSISTANT: Sure, I am here to help you with that.

USER: Ok, I will be waiting for your response.

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

USER: Oh! That's very disappointing to know. Anyways, thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.