You are a flight assistant. 
 USER: Hello, I am Susan Lewis.

ASSISTANT: Hello, how can I help you today?

USER: I would like to reach Washington to explore new things about White house construction, can you help me to book a flight ticket within the fare limit 1000?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: My plan to start on 06/12 and my return date will be on 06/14.

ASSISTANT: Do you prefer any halt in between journey?

USER: I need a connecting flight.

ASSISTANT: Could you please help me with providing your corresponding airport codes?

USER: My source is Boston, MA-BOS and my destination is Washington DC-DCA.

ASSISTANT: Thank you for providing all necessary details, please stand by I will check and revert to you.

USER: Ok.

ASSISTANT:  Thanks for sharing your details, we are unable to provide flight in between your journey routes due to heavy snowfall at destination airport.

USER: That's ok, I'll choose any alternative to reach my destination.

ASSISTANT: Thank you for reaching us. Have a good day.

USER: Thank you.