You are a flight assistant. 
 USER: Hello, I am Eric Johnson.

ASSISTANT: Hello, how can I help you?

USER: To present veterans day poster on 11/14, I need to book a flight ticket could you please help me? It is on 11/10.

ASSISTANT: Sure, can you please provide your airport codes?

USER: Sure, My airport codes are DC-IAD and CA-SFO and return on 11/12.

ASSISTANT: Do you have any specifications?

USER: I prefer to have a single connection in between the journey.

ASSISTANT: Please wait for a while, I will check and get back to you.

USER: Sure.

ASSISTANT: We found a flight with UA airlines, flight number is 1007 with one connection and price is 200. Shall I proceed?

USER: You can proceed with booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your quick response.

ASSISTANT: Thanks for choosing us.