You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me in booking my flight ticket from DEN to LAX?

ASSISTANT: Sure, may I know your travelling dates?

USER: My planned travel dates are Dec 25-27.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any preferences?

USER: No.

ASSISTANT: May I know your name?

USER: I am Rebecca Johnson.

ASSISTANT: You have a connecting flight 1000 in Frontier airline and price 200, Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you.