You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Brandon Martinez. I want to book a flight ticket to Chicago to visit Cloud gate. Can you help me with booking under the range of 500?

ASSISTANT: Sure, may I know your journey dates?

USER: My journey dates are 01/23 to 01/25.

ASSISTANT: Ok, can you provide me your airport codes?

USER: Airport codes are from BOS to ORD.

ASSISTANT: Ok, let me check what flights are available for you.

USER: Sure.

ASSISTANT: We found an AA airline with flight number 1003 and price of 300 available for you. Shall I proceed with booking?

USER: Ok, You can proceed.

ASSISTANT: Your booking is confirmed.

USER: Ok, Thanks for the response.

ASSISTANT: Thank you for opting us.