You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning to book a ticket from IAH to IAD. Can you please help me out?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I am planning to travel on June 21 and return back on June 23.

ASSISTANT: Can you please share your airline preference?

USER: I am looking for a normal cost airline.

ASSISTANT: Do you have any other requirements?

USER: I am looking for a connecting flight.

ASSISTANT: May I know your name please?

USER: My name is Michael Lewis.

ASSISTANT: We found an AA airline, flight number: 1014, price: 300 with one connection.

USER: That's fine, please proceed the booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your service.

ASSISTANT: Thank you, have a good day.