You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Rebecca Williams. I would like to cancel my recent reservation, due to ill health. Can you please help me?

ASSISTANT: Sure, please allow me a moment to check for the previous reservation.

USER: Sure, I will wait for your response.

ASSISTANT: Rebecca, there is no reservation found under your name.

USER: That's ok, thank you for your information.

ASSISTANT: You are welcome. Thank you for reaching us.