You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Please book a flight ticket from LAS to DFW.

ASSISTANT: Sure, may I know your to and fro dates please?

USER: My planned travel dates are Apr, 4 and Apr, 6.

ASSISTANT: Do you preference any particular times to depart and return?

USER: No.

ASSISTANT: Which class would you like to choose?

USER: I am comfortable with any class.

ASSISTANT: May I know your connection limit please?

USER: I need single connection.

ASSISTANT: Sure, is there any other preference do you have?

USER: No.

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

USER: Sarah Rodriguez.

ASSISTANT: We have a flight from Frontier airlines which is suitable for you and the fare is 300. Shall I continue with this flight?

USER: Please proceed.

ASSISTANT: Your economy class ticket has been confirmed with flight number 1020.

USER: Thank you.

ASSISTANT: Thank you for reaching us.