You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Eric Martin. I want to book a flight ticket with a price limit of 200.

ASSISTANT: Sure, may I know your travel dates please?

USER: My departure is 10/22 and return date on 10/24.

ASSISTANT: Could you please provide me your airport codes?

USER: I am planning to meet my uncle in AZ - PHX and origin from MA - BOS.

ASSISTANT: Thanks for giving your details, we found a flight on your details with airline Southwest, flight number: 1008. Shall I proceed for booking?

USER: You can proceed to booking.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your service.

ASSISTANT: Thanks for choosing us.