You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me in booking my flight ticket from DFW to LAS?

ASSISTANT: Please let me know your journey dates?

USER: My planned travel dates are June 28-30.

ASSISTANT: Do you have any preference?

USER: I prefer to fly in connected flight.

ASSISTANT: May I know your name?

USER: Myself, Jack Harris.

ASSISTANT: Found ticket with Delta airlines for price 100 having flight number 1020. Shall I book a ticket?

USER: Ok, thank you for your help. Please go ahead.

ASSISTANT: Your ticket is booked. Thank you.