You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Barbara Walker.

ASSISTANT: How may I help you?

USER: Could you please help me to book an economy class ticket within the fare limit 500 to Dallas?

ASSISTANT: Sure, I am here to help you. May I know your take off airport code?

USER: My boarding and landing airport codes are PHL and DFW.

ASSISTANT: Can you please share the depart and arrival dates as per your schedule?

USER: I want to start on Oct 30th and my return date will be on Nov 1st.

ASSISTANT: Let me know your connection limit.

USER: I need a break in between my journey.

ASSISTANT: Give me a  minute, I will let you know the flight availability.

USER: Sure.

ASSISTANT: Thank you for waiting, there is a flight available with fare 200 and single connection in AA airline having 1005 as flight number. May I confirm it?

USER: That's fine, you can book the ticket.

ASSISTANT: Your reservation has been confirmed in economy class.

USER: Thank you for your help in booking.

ASSISTANT: Thank you.