You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I be your helping hand today?

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

ASSISTANT: Sure, we are glad to help you. May I know your good name please?

USER: Sure, Cynthia Hernandez here.

ASSISTANT: Ok, help me with your connection limit.

USER: I want a flight with single connection.

ASSISTANT: Ok, help me with your planned dates.

USER: My planned travel dates are 05/24 and 05/26.

ASSISTANT: Is there any other concerns?

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

ASSISTANT: Sorry to notify you that, no flights are found based on your given information.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for availing us.