You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Cynthia Baker here, I want to reserve my ticket from HOU to DFW, can you please help me?

ASSISTANT: Sure, when would you like to depart and return?

USER: Sure, my planned dates of journey are from Aug, 06 to Aug, 08.

ASSISTANT: Do you need halt between your journey?

USER: Yes, I need a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: Yes, I need a airline preference which is having normal cost.

ASSISTANT: Ok, we found a Delta airline, flight number: 1015, price: 200 with one connection.

USER: Ok, you can book it.

ASSISTANT: Your flight ticket has been reserved in economy class.

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

ASSISTANT: Thank you for choosing us.