You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Ryan Walker. I am planning to attend a conference at Seattle, help me in booking my flight ticket from Washington DC-IAD.

ASSISTANT: Ok, Please let me know your travelling dates.

USER: 03/29 is my starting date, my return date is on 03/31.

ASSISTANT: Can I have your destination please?

USER: My destination point is WA-SEA.

ASSISTANT: There is a connecting flight with price 100, flight number is 1021. Shall I proceed with booking?

USER: Please proceed with booking.

ASSISTANT: Your ticket has been confirmed with UA airlines.

USER: Thank you for your help.

ASSISTANT: Thanks for reaching us.