You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you?

USER: I am David Hall. I want to book a ticket from DFW to EWR to attend seminar, can you help me in booking?

ASSISTANT: Sure, can you share your journey dates?

USER: I am departing on 04/27 and return on 04/29.

ASSISTANT: Do you have any specifications?

USER: I want a flight with connection limit 1.

ASSISTANT: How  much you can afford for your ticket?

USER: I can afford price 500.

ASSISTANT: There is a connecting flight with number 1001 in airline Delta, the fare is 100.

USER: Please proceed for booking.

ASSISTANT: Your ticket is reserved, happy journey.

USER: Thank you for your help. Great service.

ASSISTANT: Thank you for reaching us.