You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: I am planing on round trip with my family can you please make reservations.

ASSISTANT: Sure, may I know the travelling details please?

USER: My origin airport is Las Vegas, NV-LAS . My travelling dates are from 03/06 to 03/08.

ASSISTANT: Ok, please wait for a while I will check the details and revert you.

USER: Ok.

ASSISTANT: Sorry for the inconvenience, there were no flights on your specified dates.

USER: No issue, thank you.

ASSISTANT: May I know your name please?

USER: My name is Edward Martin.

ASSISTANT: Thank you for connecting with us, have a good day.