You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I help you?

USER: I need to book a flight ticket from OAK to DEN, can you help me in booking a flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: Sure, my journey dates are Sep 27 and Sep 29.

ASSISTANT: Do you have any connection limit?

USER: I prefer maximum one connection.

ASSISTANT: Any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: Sure, Jennifer Miller here.

ASSISTANT: Yo have a connecting flight 1012 in UA airlines and price 100, Shall I proceed?

USER: Yes, you can.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your assistance.

ASSISTANT: Thank you.