You are a flight assistant. 
 USER: Hello, Amy Mitchell here.

ASSISTANT: Hello, how can I help you?

USER: I have a invitation for Summit which is going to be held on Boston, will you please help me on booking a ticket?

ASSISTANT: I'll be glad to help you, please tell me your travelling details?

USER: Sure, my airport codes are LAX to BOS, and dates of travel are 06/19 to 06/21.

ASSISTANT: There is a flight available with your request. The connection is with 1 and the price is 100.

USER: Make sure that price not exceeding 5000. Ok, please book it for me.

ASSISTANT: Sure.

USER: Thanks for your service. For giving immediate responses.

ASSISTANT: The booking of the flight is confirmed with AA airlines and the flight is 1021. Thank you and have a nice day.