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

ASSISTANT: Hello, how may I assist you?

USER: I should go on 02/26 to meet my professor at my college. Please book a flight with a price limit of 1000 only.

ASSISTANT: Could you please provide me travelling details?

USER: I should start from PHL to IAH and return can be on 02/28 with one connection.

ASSISTANT: Just a moment, I will check the availability of flight and revert to you.

USER: Ok.

ASSISTANT: We found a flight with price limit 200 and single connection. There is a Frontier airline and flight number is 1023. Shall I proceed for the booking?

USER: Ok, you can proceed to book.

ASSISTANT: Your booking has been done.

USER: Thank you for your service.

ASSISTANT: Thank you.