You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Charles Perez. I want to book a flight ticket to Dallas TX-DFW, help me in booking my flight ticket from Houston TX-IAH.

ASSISTANT: Sure, may I know your depart and return dates?

USER: My depart date is on 10/31, my return date will be 11/02.

ASSISTANT: Do you need a connection in between journey?

USER: I need a connecting flight.

ASSISTANT: May I know your price limit?

USER: My price limit is 5000.

ASSISTANT: We found a flight of southwest airline, flight number as 1023 with the fare of 400. Shall I proceed?

USER: Thank you.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.