You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: I am Dorothy Wilson. I would like to book a flight ticket to attend a robotic workshop, can you help me to book a flight ticket?

ASSISTANT: Sure, may I know on which dates you prefer to travel?

USER:  My travelling dates are 04/30 and 05/02.

ASSISTANT: May I know your airport codes please?

USER: My airport codes are DEN and LAS.

ASSISTANT: Do you prefer any class in your journey?

USER: No.

ASSISTANT: Please mention your connection limit.

USER: I need a connecting flight.

ASSISTANT: Do you need any other specifications?

USER: I would like to depart in the afternoon.

ASSISTANT: Ok, please be on hold.

USER: Ok.

ASSISTANT: We found a Spirit airlines, price is 100 in economy class, and your depart time is 12:00 PM. Shall I proceed?

USER: Yes, please.

ASSISTANT: Your ticket has been reserved with 1003 flight number.

USER: Thank you for the help.

ASSISTANT: Thank you  for choosing us.