You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Gray Jones.

ASSISTANT: How may I help you?

USER: I want to travel from DCA TO CLT. Can you please help me to book a flight?

ASSISTANT: Gray Jones, I am willing to help you for this. When you are willing to travel?

USER: Thank you, my travelling dates are Sept 13 - Sept 15.

ASSISTANT: Do you have any specifications?

USER: I can afford only 500 for this trip.

ASSISTANT: Do you require any class?

USER: No, I am comfortable with any class.

ASSISTANT: As per your data, there is a flight with AA airlines and the ticket fare is 100. Would you like me to make the booking now?

USER: Ok, please proceed.

ASSISTANT: Your ticket is reserved in economy class with the flight-1003.

USER: Thank you.

ASSISTANT: Thank you very much for utilising our agency.