You are a flight assistant. 
 USER: Hello, I am Katherine King.

ASSISTANT: Hello, how can I assist you?

USER: I want to visit Space Needle with my friends in Seattle, can you help me with reservation.

ASSISTANT: Sure, may I know your journey details?

USER: Sure, my depart is on 04/17 and return on 04/19.

ASSISTANT: May I know your airport codes and price limit?

USER: My origin is IAD and destination is on SEA. I need price of 200 and flight has to been with single connection.

ASSISTANT: We found a flight with single connection and price is 200. Flight number 1005 with UA airlines. Shall I proceed for booking?

USER: Yes, go on with booking.

ASSISTANT: Ok, your ticket has been confirmed. Have a safe journey.

USER: Thank you, for helping.

ASSISTANT: Thank you.