You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you at this moment?

USER: Samuel Young here, can you please help me in booking the ticket from IAH to OAK? As I'm planning to visit Oakland.

ASSISTANT: Sure, I will help you with that. Can I have your travel dates please?

USER: Sure, my planned departure and return travel dates are 09/15 and 09/17.

ASSISTANT: Ok Young, please wait a moment.

USER: Sure, I'll wait for your response.

ASSISTANT: Sorry Samuel Young, no flight is available to you on your dates due to weather conditions.

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

ASSISTANT: Thank you for choosing us, have a good day.