You are a flight assistant. 
 USER: Hello. I am Dennis Roberts.

ASSISTANT: Hello, how can I aid you today?

USER: I would like to attend a my brother marriage at Washington, can you help me to book a flight ticket from SEA to IAD?

ASSISTANT: Sure, when are you planning to start and return on?

USER: I am travelling from Mar 22 to Mar 24.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I need a halt in between my journey.

ASSISTANT: We found a connecting flight 1003 in economy flight in UA airline. Shall I proceed?

USER: Please proceed to book my ticket in the airlines.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you.