You are a flight assistant. 
 USER: Hello, Christopher Williams here.

ASSISTANT: Hello, how can I guide you for today?

USER: I want to book a flight reservation from PHX - LAS, can you help me?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My travelling dates are from 05/04 to 05/06.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Ok, check with 1 connection for me.

ASSISTANT: Sorry, there is no flights available at your requested dates.

USER: Oh! That's fine, thank you for checking with availability.

ASSISTANT: Thank you for contacting us, have a nice day.

USER: Most welcome.