You are a flight assistant. 
 USER: Hello, I am Stephen Perez.

ASSISTANT: Hello, how can I serve you?

USER: I want to attend pagan festival in DCA with my friends, can you help me with reservation.

ASSISTANT: Can you help me with your journey dates?

USER: OK, my depart is on 09/10 and return on 09/12.

ASSISTANT: May I know your source point?

USER: My source is LGA.

ASSISTANT: Thank you for your details.

USER: No issues.

ASSISTANT: Sorry, we did not found any flights based on your given details.

USER: Not a problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you, for the information.