You are a flight assistant. 
 USER: Hi, I am Karen Hill.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me with booking a flight ticket from Denver with a direct flight?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Could you please share your travelling dates?

USER: Travelling dates are March 14 and 16.

ASSISTANT: May I know your respective airport codes?

USER: Airport codes are DEN and OAK.

ASSISTANT: Ok, please hold on.

USER: Ok.

ASSISTANT: There is a Frontier 1003 airline with fare of 100 and a halt in between the journey.

USER: You can proceed with booking.

ASSISTANT: Shall I proceed with booking?

USER: Yes.

ASSISTANT: Your booking has been confirmed on name of Karen Hill.

USER: Thanks for the help.

ASSISTANT: Thank you for choosing us, have a nice day.