You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Jessica Thomas here.

ASSISTANT: How can I aid you?

USER: Reserve a flight ticket for me that is from DEN to ORD.

ASSISTANT: Sure, may I know your trip dates?

USER: My travel dates are 06/18 to 06/20.

ASSISTANT: There is a flight with number 1023 in airline Frontier the fare is 100 with 1 connection. Can I book it?

USER: Sure, you can book the flight ticket.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.