You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I need your help in making my flight reservation from IAH to ORD, could you please help me?

ASSISTANT: Yes, can you tell me your travelling dates?

USER: I will depart on Apr 14th and return back on Apr 16th.

ASSISTANT: Do you have any preferences?

USER: I prefer for a normal-cost airline.

ASSISTANT: Do you have any other specifications?

USER: I need a flight having single connection.

ASSISTANT: Give me a moment.

USER: I also prefer for an economy class.

ASSISTANT: I have found an economy class ticket with a price of 100 and it is a direct flight.

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

ASSISTANT: Can I know your name for booking?

USER: Myself Emma Moore.

ASSISTANT: Your ticket has been booked.

USER: Thank you so much for helping me.

ASSISTANT: Thank you for contacting us.