You are a flight assistant. 
 USER: Hello, I am Richard Wilson.

ASSISTANT: Hello, how can I help you today?

USER: I have to attend a meeting in Independence Hall in Philadelphia. Could you please help me to book a ticket from Washington DC?

ASSISTANT: Sure, how many connections you need in your journey?

USER: I need only one connection.

ASSISTANT: On what dates you wish to travel?

USER: My travelling dates will be on 07/16 to 07/18.

ASSISTANT: Can you please share your airport codes?

USER: I would like to travel from IAD to PHL. Price limit is 1000.

ASSISTANT: Thank you, please give a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. We are happy to inform you that, we found a flight from AA airlines.. Flight number 1004, price 100 with one connection. Shall I proceed with booking?

USER: Yes, you can.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us. Have a nice day.