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

ASSISTANT: Hello, how can I provide assistance to you?

USER: I would like to attend a flower festival at Boston. Please make a reservation for round trip.

ASSISTANT: Sure. Do you need lay by in between your journey?

USER: Yes, I need a halt in my journey.

ASSISTANT: May I know your when are you starting your trip?

USER: I will start my journey on 07/24.

ASSISTANT: Help me with your airport code please.

USER: My airport code is Boston, MA -BOS.

ASSISTANT: Kindly, share your return date to proceed further.

USER: I will return on 07/26.

ASSISTANT: Please, hold on for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for waiting, there is a flight available with UA airline, flight number 1020 with fare 100 and  a lay by.

USER: Proceed with my booking.

ASSISTANT: Your reservation has been done successfully.

USER: Thank you for being my helping hand.

ASSISTANT: Thank you for reaching us.