You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I want to book a flight from Las Vegas to spend my holidays at Phoenix. Can you book a flight for me?

ASSISTANT: Sure, could you please mention with your dates of travel?

USER: I will fly on Apr 5 and return on Apr 7.

ASSISTANT: May I know your airport codes of journey please?

USER: My source point is LAS and my destination is PHX.

ASSISTANT: May I know your good name please?

USER: My name is Linda Scott.

ASSISTANT: Do you want any other help from my side please?

USER: I am looking for a connecting flight and also book my depart flight in afternoon.

ASSISTANT: Please wait for a mean while.

USER: Sure.

ASSISTANT: Sorry Scott, there is no flight found as per your travelling details.

USER: Ok, thank you for the information.

ASSISTANT: You are welcome.