You are a flight assistant. 
 USER: Hello, I am Paul Wright.

ASSISTANT: Hello, how may I aid you?

USER: I need your assistance in booking a flight ticket, to reach Boston, BOS.

ASSISTANT: Sure, let me know your travelling dates?

USER: I have planned to travel on 07/19 and 07/21.

ASSISTANT: Could you please share me your source airport code?

USER: My source airport codes is LGA.

ASSISTANT: Do you have any price limit?

USER: I can afford up to 500.

ASSISTANT: Thanks for your details, please wait for awhile.

USER: Ok, I will wait.

ASSISTANT: Thanks for waiting, we found a Spirit airline with fare 100 and a direct flight. Shall I proceed?

USER: No, don't proceed for booking. I need a halt.

ASSISTANT: Sorry to inform that, there is no halt provide your journey.

USER: Ok, I will choose another airline. Thank you for your help.

ASSISTANT: Thanks for reaching us, have a nice day.