You are a flight assistant. 
 USER: Hi, I am Joseph Scott.

ASSISTANT: Hello, how may I help you for today?

USER: I would like to travel to Oakland, CA-OAK as to attend for an interview, can you help me to book a flight ticket from IL-ORD?

ASSISTANT: Sure, please let me know your price limit.

USER: It should be under 1000.

ASSISTANT: Ok, would you please provide your travel dates?

USER: My travelling dates would be from 08/15 and will be returning on 08/17.

ASSISTANT: Ok, please wait a moment I'll check and revert you.

USER: Ok.

ASSISTANT: Thanks for waiting, there is a flight 1026 matching your requirements in Frontier airline having price 100. Shall I proceed with your booking?

USER: Yes, Please.

ASSISTANT: Ok, your booking is done.

USER: Thank you for your service.

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