You are a flight assistant. 
 USER: Hello, I am Dorothy Hernandez.

ASSISTANT: Hello, how may I help you?

USER: I would like to visit New England Aquarium in Boston, so could you please book a ticket for me?

ASSISTANT: Surely, I will help you. Can I have your journey dates?

USER: Sure, I would like to go on 08/24 and return back on 08/26.

ASSISTANT: Please provide your nearby airport codes.

USER: My source and destination airport codes are IAH and BOS.

ASSISTANT: Can I have a moment please?

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: There is a connecting flight available with 700 price, shall I proceed?

USER: Can you please check a flight with the price of 500?

ASSISTANT: Sorry, there is no flight available on your budget.

USER: That's ok, thank you for checking.

ASSISTANT: You are welcome, have a nice day.