You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What can I do for you today?

USER: I am Rebecca Roberts, want to book a flight ticket to Seattle with price under 200. Can you help me with it?

ASSISTANT: Ok. Can I have your airport codes?

USER: Airport codes are IAD-SEA.

ASSISTANT: On which dates you want to travel?

USER: I would like to travel on 10/28 and return on 10/30.

ASSISTANT: Thanks for your details. We found a 1015 flight with 1 connection of price of 100. Shall I confirm your ticket with Delta airline?

USER: Yes, you can proceed.

ASSISTANT: Your ticket was booked.

USER: Thanks for the help.

ASSISTANT: Thank you for your time with us.