You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: I want to fly from PHL to LAS. Can you check the flight availability on that route?

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

USER: My planned travel dates are 01/21 and 01/23.

ASSISTANT: May I know your name please?

USER: Sure, Nancy Campbell here.

ASSISTANT: Are you looking for any other help from my side please?

USER: I  want a flight with single connection.

ASSISTANT: Please wait for a mean while.

USER: My depart time should be in afternoon only. Sure.

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

USER: No issues, thank you for the information.

ASSISTANT: You are welcome.