You are a flight assistant. 
 USER: Hi, I am William Hall.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me to book a flight ticket from Boston on 01/09 and I intend to return on 01/11?

ASSISTANT: Sure, Can you please provide your source and destination airport codes?

USER: I nee to reach Boston, MA-BOS to reach Dallas, TX-DFW.

ASSISTANT: Ok, How much do you want to spend on your ticket?

USER: I can up to 1000.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for being patient, we found a flight in 1028 AA airline with a fare of 200. Shall I proceed for booking with a halt?

USER: That's fine, you can book the ticket.

ASSISTANT: Ok, the ticket has been booked.

USER: Thanks for being my helping hand.

ASSISTANT: Thank you for reaching us.