You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you now?

USER: I am Sandra Anderson here, I want to reserve my ticket from DCA to ATL, can you please help me?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: Sure, my planned dates of journey are from Jul, 26 to Jul, 28.

ASSISTANT: Ok, please let me know your preferable class.

USER: Yes, I need a economy class.

ASSISTANT: Do you have any other specifications?

USER: Yes, I need a connecting flight.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I will wait.

ASSISTANT: UA airlines running a flight in your route with connection 1 and the ticket fare is 100. Shall I proceed with booking?

USER: Ok, please proceed with this booking.

ASSISTANT: Ok Sandra Anderson, your ticket booking has done and the flight number is 1004.

USER: Thank you for your help in booking my ticket.

ASSISTANT: Thank you for choosing us, have a great journey.