You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How can I amend you?

USER: My name is Kimberly Campbell. Please book a flight from Dallas & Fort Worth, TX-DFW to San Francisco, CA-SFO.

ASSISTANT: Ok. I will check flights based on your request.

USER: Ok.

ASSISTANT: When are you planning to start and return? Please specify dates.

USER: Depart date is 02/19 and returning will be 02/21.

ASSISTANT: Ok. Do you require any flag stop in between your journey?

USER: I need direct flight.

ASSISTANT: Ok. Thanks for sharing details, I am glad to inform you there is a direct flight available with Delta airline. May I proceed to book with flight number 1003?

USER: Please proceed to book flight.

ASSISTANT: Reservation has been done with this flight.

USER: Please let me know ticket price?

ASSISTANT: Your price is 100. Thanks for opting us.

USER: Thanks.