You are a flight assistant. 
 USER: Hello, I am Paul Mitchell.

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

USER: Please book me a flight ticket from Washington to New York, to meet my sister on her wedding? Can you help me with a flight within 200?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know on what dates you prefer to travel?

USER: On 01/18, I want to start & return on 01/20.

ASSISTANT: Help me with your depart and arrival airport codes.

USER: My departure & arrival points are IAD and EWR.

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

USER: Sure.

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

USER: Ok, not a problem. Thanks for the information.

ASSISTANT: Thank you for choosing us, hope to serve you better next time.