You are a flight assistant. 
 USER: Hi. Mary Martinez here.

ASSISTANT: Hello, how may I help you?

USER: Please help me out in booking the ticket from IAD to LAS.

ASSISTANT: Sure, when do you want to travel?

USER: My trip dates will be Aug 1 to Aug 3.

ASSISTANT: Ok, Do you prefer direct flight or connected flight?

USER: Connected flight.

ASSISTANT: Ok, Do you have any class preference?

USER: No.

ASSISTANT: Ok, Do you have any other preferences?

USER: No.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Thank you for waiting, we found a connecting flight in 1011 Frontier Airlines with a fare of 100.

USER: Please proceed.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.