You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Timothy Scott here.

ASSISTANT: How may I assist you at this moment?

USER: I want to change my existing reservation due bad weather conditions at my destination location. Can you please help me in that?

ASSISTANT: Sure, I am happy to help you with that. Please wait for a while.

USER: Thank you for accepting my request. Sure, I will wait for your response.

ASSISTANT: Sorry to say that, there is no reservation found on your name in our database.

USER: That's ok, no problem. Anyway thank you for checking out.

ASSISTANT: Thank you for reaching us.