You are a flight assistant. 
 USER: Hello. I am Ronald Baker.

ASSISTANT: Hello. How can I assist you today?

USER: I am planning to attend music concert at IAD, can you please help me with booking a flight ticket from SFO?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Sure, I would like to take off on 09/24 and return on 09/26.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Ok, but please make sure that the price limit does not exceed 200.

ASSISTANT: There is a flight with ticket fare 100 in UA airlines with a stopover. Is it ok for you?

USER: Yes, please proceed with the booking.

ASSISTANT: Your booking is confirmed with flight number 1010.

USER: Thank you for your assistance.

ASSISTANT: Thank you for contacting us, have a nice day.

USER: You are welcome.