You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Can you please help me to book a flight from CLT to DFW?

ASSISTANT: Sure, can you please mention your depart and arrival dates of your journey?

USER: I want to travel on Dec 23 and need to return on Dec 25.

ASSISTANT: Do you prefer any lay by in between journey?

USER: Yes, I need a lay by.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: I do not have any other specifications.

ASSISTANT: May I know your name please?

USER: Emma Smith.

ASSISTANT: No flights found as per your preferences at the moment.

USER: Ok, not an issue. Thank you for checking.

ASSISTANT: Thank you.