You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, can you share your journey dates?

USER: Sure, I would like to take off on 09/26 and return on 09/28.

ASSISTANT: Give me a minute.

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

ASSISTANT: There is a connecting flight with number 1013 in airline Spirit, the fare is 100.

USER: Yes, please proceed with the booking.

ASSISTANT: Your ticket is reserved.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.