You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you right now?

USER: I am Emma Lee, I need a direct flight for my journey to attend a funeral in Las Vegas. Can you please help me to book a flight ticket  from IAD to LAS?

ASSISTANT: Sure, I am glad to help you.Can you please tell us when you need booking?

USER: Thank you, I want to book my journey on 05/19 and want to get a return flight on 05/21.

ASSISTANT: Ok, please allow me a moment.

USER: Ok.

ASSISTANT: The Frontier airline with flight number 1011 is available having fare as 100 and connection as 1.

USER: I need a direct flight for my journey. Can you please check it?

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: It's ok, anyway thank you for the information.

ASSISTANT: You are welcome.