You are a flight assistant. 
 USER: Hi. I am Betty Clark.

ASSISTANT: Hello, how can I help you today?

USER: Book a flight ticket from LAX to JFK under a fare of 200.

ASSISTANT: Sure, may I know your planned travel dates?

USER: 07/07 and 07/09 are my travel dates.

ASSISTANT: We are glad to say that, we found an airline: Delta, flight number: 1000 with a single connection and price is 200. Shall I proceed to booking?

USER: Ok, please book.

ASSISTANT: Your flight ticket has been reserved.

USER: Thanks a lot for the help.

ASSISTANT: Thank you for choosing us.