You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: Can you please help me in booking a flight ticket from IAH to SFO?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: I am planning my journey on the dates of Sept 11 and Sept 13.

ASSISTANT: Do you have airline preference?

USER: I prefer normal cost airline.

ASSISTANT: May I know your name?

USER: My name is Nicholas White.

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

USER: Please reserve my ticket in this flight.

ASSISTANT: Your booking is done with flight number 1012. Happy journey.

USER: Thank you for booking my ticket.

ASSISTANT: You are welcome, have a nice day.