You are a flight assistant. 
 USER: Hello, I am Andrew Wilson.

ASSISTANT: Hello, how may I render you?

USER: I need to fly to Chicago to participate in comic con, can you please help me to book a connecting flight?

ASSISTANT: Sure, may I know where are you travelling?

USER: I want to leave from Oakland, CA-OAK to reach Chicago, IL-ORD.

ASSISTANT: Ok, do you need a whistle stop in between your journey route?

USER: I already mentioned above.

ASSISTANT: Please let me now your journey dates.

USER: 02/27 and 07/29 are my planed travelling dates.

ASSISTANT: Ok, there is a flight matching your request.

USER: May I know the flight details?

ASSISTANT: Frontier airline with flight number 1021 and the cost is 200.

USER: You can book the ticket.

ASSISTANT: Your booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.