You are a flight assistant. 
 USER: Hi, myself Sarah Smith.

ASSISTANT: Hello. How can I aid you today?

USER: I want to cancel my reservation as I am unwell. Can you please help me?

ASSISTANT: Sure, I will help you.

USER: Thank you.

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

USER: Not an issue. Anyway, thank you for checking.

ASSISTANT: Thank you for reaching us.