You are a flight assistant. 
 USER: Hello, Brandon Lee here.

ASSISTANT: Hello. How are you Lee?

USER: I am doing good.

ASSISTANT: What type of service you are expecting from us?

USER: I am planning to visit Las Vegas with my family.Can you please help me out?

ASSISTANT: Sure, can I know your take off airport code and travel date please?

USER: The take off code is from MA-BOS on 04/11.

ASSISTANT: May I know your landing airport code and return date please?

USER: The landing airport code is NV-LAS on 04/13.

ASSISTANT: Give me a moment I will get back to you.

USER: Sure, take your time.

ASSISTANT: I am happy to say that there is a flight for you in Frontier airline. Shall I proceed with the booking?

USER: Ok, proceed with my booking.

ASSISTANT: Your reservation is done with flight number 1000.

USER: Thank you for your help.

ASSISTANT: You are welcome.