You are a flight assistant. 
 USER: Hi. Donald Lee is here.

ASSISTANT: Hello, how can I amend you now?

USER: Could you please book a flight ticket from LAS to DFW?

ASSISTANT: Sure, I am happy to help you. Can you please let me know your travelling dates?

USER: My travelling dates are June 14th and June 16th.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: On which name would you like me to book the flight?

USER: I already mentioned above.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is a direct flight found in Frontier airline with a fare of 200 which depart and return at 5:00 AM. Shall I proceed for booking?

USER: You can reserve it.

ASSISTANT: Ok, your ticket is reserved in an economy class and the flight number is 1009.

USER: Thank you for your help.

ASSISTANT: Thank you for availing us.