You are a flight assistant. 
 USER: Hello. I am Brandon Jones.

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

USER: I would like to book a flight ticket with economy  class.

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

USER: Sure, my travelling dates are May 17 and May 19.

ASSISTANT: May I know your nearby airport codes?

USER: Sure, my airport codes are ORD and IAH.

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

USER: Yes, please proceed.

ASSISTANT: Your booking is done with flight number 1001. Happy journey.

USER: Thank you for your service.

ASSISTANT: You are welcome, have a nice day.