You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Emily Parker, I want to book a flight on 10/20 and return ticket on 10/22 to meet my friend.

ASSISTANT: Sure, please provide me your airport codes?

USER: I will fly from IL-ORD to CO-DEN.

ASSISTANT: Thanks for your details, we found 1004 Frontier airline with single connection and price of 100. Shall I proceed with booking?

USER: Please proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.