You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Please help me in booking a flight ticket in my preferable travel dates Mar, 23 and Mar, 25.

ASSISTANT: Sure, please share your airport codes?

USER: HOU and ORD are my airport codes.

ASSISTANT: Do you have any connection limit?

USER: I am looking for single connection.

ASSISTANT: Any other preferences?

USER: I need to travel in normal cost airline service only.

ASSISTANT: Can I have your name please?

USER: Dorothy Hall.

ASSISTANT:  Delta airlines flight 1019 available with connection and fare is 100, shall I confirm this economy class flight?

USER: Please book.

ASSISTANT: Ok, your ticket has been processed.

USER: Thank you.

ASSISTANT: Thank you for opting us.