You are a flight assistant. 
 USER: Hello. Is this flight ticket booking agency?

ASSISTANT: Hello, welcome to our ABC travelling agency. How may I assist you?

USER: I want to travel Chicago from Dallas, because I want to meet  my grandmother in this summer holidays, can you please check is there any flight available on 05/17?

ASSISTANT: Sure, could you please help me with your further details of travel?

USER: My departure airport code is DFW and destination airport code is ORD, these airports are very convenient  for my trip.

ASSISTANT: Can you please help me with your travelling dates for proceeding with the further process?

USER: Please book my return ticket also on 05/19.

ASSISTANT: Ok, may I know your name please?

USER: Sure, my name is Nancy Rodriguez.

ASSISTANT: Nancy, I find a flight with connection is 1 of cost 100.Shall I book it?

USER: Please confirm this flight ticket on my name.

ASSISTANT: Ok, your booking is confirmed with Delta airlines and number 1026.

USER: Thank you for your help.

ASSISTANT: You are welcome. Have a nice day.