You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Sandra Green. I have a plan to visit some historical places at Boston, please help me by booking a flight ticket under price 1000.

ASSISTANT: Sure, please provide me your travelling dates?

USER: My travelling dates are from 07/19 to 07/21.

ASSISTANT: To check the flight availability we need your airport codes, can you please share me your airport codes?

USER: My source code is IAH and Destination code is BOS.

ASSISTANT: Do you prefer any lay by in between your journey?

USER: I need a stopover within my journey.

ASSISTANT: We found a flight on your details with airline Frontier, flight number: 1000.

USER: Please go with reservation.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your service.

ASSISTANT: Thank you so much.