You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Benjamin Campbell here. I would like to visit National Air and Space Museum in Washington, can you please help me out with booking of a flight ticket to go there?

ASSISTANT: Sure. May I know your preferred journey dates please?

USER: Sure, I am planning to go on 07/25 and please book a return ticket also on 07/27.

ASSISTANT: Please provide me your airport codes for better search.

USER: Sure, I want to travel from SFO to IAD.

ASSISTANT: Please wait a minute.

USER: Take your time to check.

ASSISTANT: There is a flight with Spirit airlines available with price 100. Shall I book the ticket for you?

USER: If it is single connected flight, you can proceed with booking.

ASSISTANT: Your ticket is confirmed with flight 1029.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us, have a good day.