You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I amend you?

USER: I would like to travel from WA-SEA to IL-ORD, can you book me a flight ticket?

ASSISTANT: Sure, I will help you with that. May I know your travelling dates?

USER: Sure, I would like to go on 07/16 and intend to back on 07/18.

ASSISTANT: Is there any connection limit?

USER: Yes, I need a stopover.

ASSISTANT: We found a 1003 Frontier airline, with airfare of 200, matches your required needs. Shall I make a move?

USER: Please proceed.

ASSISTANT: Your booking is done with this connecting flight.

USER: Thank you.

ASSISTANT: Thank you for making us to serve you.