You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Ronald Lewis.

ASSISTANT: Ronald Lewis, how may I aid you?

USER: I want to cancel my reservation, due to heavy rainfall in Seattle, can you help me?

ASSISTANT: Sure, please give me a moment to check your ticket status.

USER: Sure, take your time.

ASSISTANT: Sorry, no reservation is available by your name.

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

ASSISTANT: Thank you for choosing us.