You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I need a connecting flight from IAH to DCA. Can you help me in booking flight ticket?

ASSISTANT: Noted. Please send your travelling dates.

USER: My trip dates are Oct 10 to Oct 12.

ASSISTANT: Noted. Do you have any preferences?

USER: No.

ASSISTANT: There is a connecting flight available with Frontier airline, shall I proceed?

USER: You can proceed for booking.

ASSISTANT: Your booking is done with flight number 1018. Happy journey. May I know your name?

USER: Myself Dennis Hernandez. Thank you.

ASSISTANT: You are welcome, have a nice day.