You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I am Jeffrey Evans. I need to go Denver for my health checkup, so please book me a ticket on 07/20 along with a return ticket on 07/22.

ASSISTANT: Sure, let me know your locations.

USER: Sure, I will board at LGA and land at DEN.

ASSISTANT: Do you have any other specifications?

USER: Yes, I need a single connecting flight.

ASSISTANT: We are happy to inform you that we found a flight with 1012 number and the fare is 100 found in Delta airline.

USER: Please go ahead with the booking.

ASSISTANT: Ok, your ticket has been confirmed.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.