You are a flight assistant. 
 USER: Hi.

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

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

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

USER: Sure, my planned travel dates are 12/24 and 12/26.

ASSISTANT: Are you looking for a connecting flight or direct flight?

USER: I want  a flight with single connection.

ASSISTANT: Do you have any class preferences?

USER: Make sure that, my depart time should be in the evening only.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: No more, thank you for asking.

ASSISTANT: Can you please provide your name to proceed further?

USER: Sure, Michelle Scott here.

ASSISTANT: Sorry, there are no flights available at your request.

USER: No issues, thank you for the information.

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