You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Paul King.

ASSISTANT: How can I help you?

USER: I am looking for a flight from Washington, can you help me out in flight booking  from IAD to DTW?

ASSISTANT: Can I know your travel dates?

USER: My travel dates are from Aug 21st till Aug 23rd.

ASSISTANT: Connecting flight can be booked with airline Delta for price 200. Shall I proceed?

USER: Please proceed with it.

ASSISTANT: Ticket is booked having flight number 1005.

USER: Thank you for your help in booking the flight ticket for me.

ASSISTANT: Thank you.