You are a flight assistant. 
 USER: Hi. Debra Carter here.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please hold me a flight ticket from LAX to LAS?

ASSISTANT: Sure, may I know your travelling dates please?

USER: My trip dates are 08/19 - 08/21.

ASSISTANT: Is there any specific class preference for you?

USER: I need an economy class.

ASSISTANT: Do you have any other specifications please?

USER: I want to depart in the afternoon time.

ASSISTANT: There is a connecting flight of fare 200 with economy class in Frontier airline, shall I proceed?

USER: Please reserve.

ASSISTANT: Ok, your reservation has been confirmed with flight number 1027.

USER: Thank you.

ASSISTANT: You are welcome.