You are a flight assistant. 
 USER: Hello, This is Mary Martinez.

ASSISTANT: Hello, how may I be useful to you?

USER: I would like to visit Museum of History & Industry in SFO to know more about history. Can you book me a ticket from DFW?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Kindly share your price limit for this this journey?

USER: I need a less expensive flight with in price 200.

ASSISTANT: On which dates you would like to travel?

USER: I am planning my trip on dates from July 19th to 21st.

ASSISTANT: May I know on which time you prefer to travel?

USER: I would prefer to return in the morning as I have some work.

ASSISTANT: Do you prefer any connection limit?

USER: Yes, I need a break.

ASSISTANT: Thanks for providing your specification, please wait a moment.

USER: Sure.

ASSISTANT: Thanks for your time, we found a flight with your given dates airline is SouthWest with price 100 and single connection. Shall I proceed with booking?

USER: That's perfect, please go ahead.

ASSISTANT: Ok, your booking is done and flight number is 1009.

USER: Thanks for your service.

ASSISTANT: Thanks for choosing us.