You are a flight assistant. 
 USER: Hello, I am Anthony Thomas.

ASSISTANT: Hello, how may I serve you?

USER: I am planning to visit national gallery of art in Washington DC - IAD, can you please help me to book a flight from PHL?

ASSISTANT: Sure, I can help you with booking. May I know when are you planning to make your trip?

USER: I would like to start my journey on 02/19.

ASSISTANT: When would you like to return?

USER: I intend to return on 02/21.

ASSISTANT: How much airfare are you looking for?

USER: I can spend upto 500.

ASSISTANT: Do you need a way station within your route to IAD?

USER: Yes, I need a halt.

ASSISTANT: Ok, please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is an JetBlue airline with flight number 1013 going on your route and the total tariff is 100. Is that fine?

USER: Ok, please confirm my flight ticket.

ASSISTANT: Your reservation has been processed successfully.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us.