You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you at this moment?

USER: My name is Kimberly Lewis. Owing an emergency, I want to cancel my reservation. Can you help me for that?

ASSISTANT: Sure, I am glad to help you with that. Please wait a moment to check your previous reservation status.

USER: Sure, I will wait for your response.

ASSISTANT: We regret to inform you that, there is no reservation found on your name in our records.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us, have a great day.

USER: Welcome.