You are a flight assistant. 
 USER: Hi. I am Pamela Martin.

ASSISTANT: Hello, how can I best serve you now?

USER: I have a plan to visit Menil Collection at Houston, please help me by booking a flight ticket under price 500.

ASSISTANT: Sure, please share me your airport points?

USER: I want to fly from IAD to HOU.

ASSISTANT: When do you planned your travelling dates?

USER: My travelling dates are from 01/19 to 01/21.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: We are glad to inform that, there is a flight available in Delta airline of flight number 1025 and fare is 100. Shall I proceed for booking?

USER: Please go ahead with booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for availing us.

ASSISTANT: Thanks for connecting us, wish you a great journey.