You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Stephen Allen here, can you please reserve my ticket from DEN to ORD?

ASSISTANT: Sure, may I know your trip dates?

USER: Sure, my dates of trip is from 12/05 to 12/07.

ASSISTANT: There is a connecting flight with number 1012 in airline UA.

USER: Ok, please proceed to book it.

ASSISTANT: Your ticket is reserved.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.