You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am interested on historical things so I want to visit Billy Graham Library which located in Charlotte.

ASSISTANT: Sure can I know the travel airport codes?

USER: Sure, It's from LGA to CLT.

ASSISTANT: Can I know your dates of travel?

USER: I would like to travel on 10/21 and 10/23. Price should not exceed than 200.

ASSISTANT: Sure, with your requirements, I got a flight with flight number 1002 with number of connections 1. Can I proceed?

USER: Ok, then proceed.

ASSISTANT: Your booking is done in Frontier airlines.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.

USER: Welcome.