You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How can I serve you?

USER: I am Alexander Green. Please book me a flight ticket from Dallas, DFW to participate in seasonal festival.

ASSISTANT: Sure, We are here to help you.

USER: Thank you.

ASSISTANT: Can you share me your travelling dates?

USER: My journey starts from Dallas on 10/07. I intend to come back on 10/09.

ASSISTANT: Where you want to travel?

USER: San Francisco, SFO is my destination.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a halt in between my trip.

ASSISTANT: There is a flight 1018 in UA airline and price 100 with a connection. Shall I proceed?

USER: Proceed with my booking.

ASSISTANT: Reservation is done.

USER: Thank you for your help.

ASSISTANT: Thank you.