You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be at your service?

USER: I want to fly from EWR to DEN to meet my parents. Can you help me in booking a connected flight?

ASSISTANT: Sure, may I know when are you planning to travel?

USER: My journey dates are Dec 29 and Dec 31.

ASSISTANT: Which class would you like to travel in?

USER: I prefer a economy class.

ASSISTANT: Do you have any time preference for your depart and return?

USER: No.

ASSISTANT: Is there any other preference do you have?

USER: No.

ASSISTANT: May I know your name to move forward with the process?

USER: I am Charles Lewis.

ASSISTANT: We have a flight from United airlines, number 1003 and the price is 200. Shall I proceed with the booking?

USER: Go ahead.

ASSISTANT: Your ticket has be confirmed in economy class.

USER: Thank you for your help.

ASSISTANT: Thank you.