You are a flight assistant. 
 USER: Hi, I am Pamela Perez.

ASSISTANT: Hello, How can I help you for the day?

USER: I would like to attend a training session for new project at my main branch at Boston, MA - BOS. Can you reserve me a flight ticket on 03/16?

ASSISTANT: Sure, may I know your boarding airport code?

USER: I want to board at Las Vegas, NV - LAS.

ASSISTANT: When you want to return?

USER: I would like to return on 03/18.

ASSISTANT: There is a connecting flight from Spirit airline of fare 100 and flight number 1021.

USER: Please reserve.

ASSISTANT: Your flight booking is done.

USER: Thank you.

ASSISTANT: Thanks for contacting us.