You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand today?

USER: Please book a flight ticket from IAH to EWR?

ASSISTANT: Sure, we are ecstatic to help you. May I know on which dates you are planning to start and return?

USER: My journey dates are Feb 12 and Feb 14.

ASSISTANT: Do you prefer any lay by in between journey?

USER: I need a connecting flight.

ASSISTANT: May I know your good name please?

USER: I am Mark Lopez.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I prefer a business class.

ASSISTANT: Ok, please wait a moment. let me search a flight for you.

USER: Sure.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: No problem, thank you for your information.

ASSISTANT: Thanks for approaching us.