You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Pamela Hernandez here.

ASSISTANT: How can I help you?

USER: I want to book a flight ticket from PHX to LAS in the month of September.

ASSISTANT: Ok, could you share me on which dates you are willing to travel?

USER: Ok, my travelling dates are 09/14 and 09/16.

ASSISTANT: Give me a moment.

USER: Ok, sure.

ASSISTANT: Sorry to inform you that there is no flight found on your requested dates.

USER: Not a problem, anyway thank you for the information.

ASSISTANT: Thank you for reaching us.