You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Karen Thomas.

ASSISTANT: How may I assist you?

USER: I need to travel from San Francisco CA-SFO to Dallas & Forth Worth, TX-DFW.

ASSISTANT: May I know the travelling days?

USER: Ya sure. My depart is on 03/18 to 03/20.

ASSISTANT: Please wait for a minute. Thank you for waiting we found a flight 1009 in UA airlines and price is 100 with single connection.

USER: OK.

ASSISTANT: Shall I proceed for booking?

USER: Proceed with the booking.

ASSISTANT: Thank you for approaching us, your ticket has been confirmed.

USER: Thank you.