You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Dorothy Martinez here.

ASSISTANT: How can I aid you?

USER: I have planned to go Dallas to attend a seminar, can you please book a ticket from LAS to DFW?

ASSISTANT: May I know your travel dates?

USER: Sure, my travel dates are 12/17 and 12/19.

ASSISTANT:  Do you have any preference?

USER: Please check for a connecting flight.

ASSISTANT: We found a connecting flight Frontier with flight number 1001 and fare is 200. Shall I confirm?

USER: Ok, please go ahead for booking the ticket.

ASSISTANT:  Your booking is confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.