You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Laura Evans here. I want to reserve a ticket from LAS to ATL, can you help me?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My travelling dates are June 29 and July 01.

ASSISTANT: Do you have any requirements?

USER: My departure time should be in afternoon.

ASSISTANT: Sorry, no flight is available for you.

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us.

USER: Thank you for the information.