You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jacob Lewis.

ASSISTANT: How may I assist you?

USER: As I have fallen sick suddenly due to bad weather, I would like to cancel my recent reservation. Can you help me?

ASSISTANT: Sure, I will help you.

USER: Thanks.

ASSISTANT: Lewis, no reservation has been found on your name.

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

ASSISTANT: Thank you for choosing us.