You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: Kenneth Thompson here. Due to change in weather conditions, I want to change my reservation. Can you please help me for that?

ASSISTANT: Ok, wait a moment to check your previous reservation status.

USER: Ok.

ASSISTANT: Sorry Thompson, there is no reservation found under your name. Do you want to ask us anything else?

USER: No.Thank you for the information.

ASSISTANT: Ok, thank you for reaching us, have a nice day.