You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

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

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

USER: I am planning to start my journey on Aug 02 and return back on Aug 04.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Any other requirements to be met?

USER: I prefer economy class.

ASSISTANT: May I know your name?

USER: My name is Frank Anderson.

ASSISTANT: Frontier airlines flight- 1004 of price 100 with connection in economy class matches your given details, shall I proceed?

USER: Please proceed,.

ASSISTANT: Ok, your flight ticket has been booked.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.