You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I am looking for a flight from IAD to IAH, can you please help me in booking?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: My travelling dates are July 11 and July 13.

ASSISTANT: Ok, do you have any specifications?

USER: I prefer economy class.

ASSISTANT: Ok, hold on for a moment. Let me check.

USER: I need a connecting flight to reach my destination.

ASSISTANT: I found a flight for you with Frontier Airlines and it costs you 200. Shall I proceed?

USER: Please proceed with the name Melissa Edwards.

ASSISTANT: Your ticket has been booked with 1018 flight number.

USER: Thank you for your service.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.