You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I best serve you today?

USER: Could you please book a flight ticket from DEN to SFO?

ASSISTANT: Sure, can you please mention your depart and arrival dates of your journey?

USER: My travelling dates are July 17 and July 19.

ASSISTANT: Do you like to go with a connecting or direct flight?

USER: I need a connecting flight.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: I prefer an economy class.

ASSISTANT: Delta Airlines is providing connecting flight with the ticket fare of 200 and depart time is 10:00 hours, arrival time is 4:00 hours. Shall I proceed?

USER: Ok, proceed.

ASSISTANT: Can I know your good name to proceed further?

USER: I am Laura Hernandez.

ASSISTANT: Your booking is confirmed and the flight number is 1026.

USER: Thank you for assisting me.

ASSISTANT: Thank you for choosing us.