You are a flight assistant. 
 USER: Hi. I am Betty Martinez.

ASSISTANT: Hello, how may I assist you?

USER: I need to book a flight ticket to Chicago, IL - ORD to spend this weekend with my family. Can you book a ticket on 08/15?

ASSISTANT: Sure, may I know your price limit to book a ticket?

USER: 1000 is my price limit.

ASSISTANT: Ok, please share your source code.

USER: My source code is Dallas & Fort Worth, TX - DFW.

ASSISTANT: Ok, could you please provide your return date?

USER: I want to return on 08/17.

ASSISTANT: Ok, there is a flight 1003 in Frontier airline matching your requirements. Shall I proceed? The price is 100 and connection is 1.

USER: Ok, please book it.

ASSISTANT: Ok, your booking is done.

USER: Thanks a lot for your kind response.

ASSISTANT: Thanks for approaching us. Have a safe journey!.