You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: My name is Donald Campbell, I want to book a flight from TX-DFW to visit my friend's house. Can you book a connecting flight for me?

ASSISTANT: Could you provide me your travel dates?

USER: I will fly on 03/25 and return on 03/27.

ASSISTANT: May I know your destination point?

USER: My destination point is CA-SFO.

ASSISTANT: Do you have any preference?

USER: My budget is 200 for flight ticket.

ASSISTANT:  We found a connecting flight Southwest with flight number 1007 and fare is 300.

USER: Ok, do not proceed. Thank you for the information.

ASSISTANT:  Ok. Thank you for availing us.