You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Elizabeth Evans here.

ASSISTANT: How can I assist you, Evans?

USER: I need to attend a business meeting at Denver, can you please help me in booking flight ticket from DEN to OAK?

ASSISTANT: Ok Evans, may I know your travel dates please?

USER: Sure, my trip dates are 03/14 and 03/16.

ASSISTANT: Please wait for a minute.

USER: Sure, I will wait for your response.

ASSISTANT: I found a flight in Hawaiian airlines with price 100. Shall I book the ticket for you?

USER: Ok, please proceed with booking.

ASSISTANT: Your ticket is confirmed and the flight number is 1002.

USER: Thank you for your service.

ASSISTANT: Thank you for contacting us, have a good day.