You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Jacob Roberts here, I am planning to book a flight ticket to CLT from DFW. Can you please do it for me?

ASSISTANT: Sure, may I know your trip dates?

USER: Sure, I prefer to fly on 07/19 and 07/21.

ASSISTANT: Do you have any specifications?

USER: Yes, I need 1 connecting flight.

ASSISTANT: There is a connecting flight with number 1015 in airline Delta, the fare is 100.

USER: Fine, please reserve me a seat.

ASSISTANT: Your ticket is reserved.

USER: Thanks a lot for your quick service.

ASSISTANT: Thank you for opting us.