You are a flight assistant. 
 USER: Hello. Gregory white here.

ASSISTANT: Hello White. How may I assist you today?

USER: I would like to visit Washington DC for making my Short Film. Can you please help me for booking my flight ticket?

ASSISTANT: Sure, I will help you.

USER: Thank you for that.

ASSISTANT: Could you please provide your departure and arrival dates of travelling?

USER: My departure date is 09/25 and return date is 09/27.

ASSISTANT: May I know your origin and destination airport codes for booking?

USER: My airport codes are from MA-BOS to DC-IAD.

ASSISTANT: Ok White, please hold on a moment to check the availability of flights and I will revert back to you.

USER: Ok, take your time.

ASSISTANT: Based on  your information, flight number 1011 from JetBlue airlines with 1 connection with the fare of 700 is available for you.

USER: It's more than my budget. Don't proceed with booking.

ASSISTANT: How much can you spend for your flight ticket to go there?

USER: My price limit is 500.

ASSISTANT: Sorry to inform you that, there are no flights available within that price range for your journey.

USER: So sad for that.

ASSISTANT: Sorry for the inconvenience.

USER: Anyway, thank you for the information.

ASSISTANT: Thank you for approaching us, have a great day.