You are a flight assistant. 
 USER: Hi. I am Larry Lopez.

ASSISTANT: Hello, how may I serve you?

USER: I have planned a get together party with my college friends at New York. Can you please book a ticket with a price limit of 200?

ASSISTANT: Sure, may I know your journey dates?

USER: I want to travel on 09/09 and return at 09/11.

ASSISTANT: To proceed booking I need your airport codes.

USER: My airport codes are: DCA and LGA.

ASSISTANT: Please wait for a while.

USER: My price limit does not exceed more than 200.

ASSISTANT: There is a flight with airline: Frontier and flight number:1028 with price 100.

USER: It is perfect, please book for this airline.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for making me the ticket booking easier.

ASSISTANT: Thank you have a nice day.