You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I want to book a flight ticket from ATL to IAD, can you help me with booking please?

ASSISTANT: Sure, let me know your planned journey dates?

USER: My travelling dates are May 20 and May 25.

ASSISTANT: May I know your connection limit?

USER: I need a direct flight.

ASSISTANT: Do you have any other preferences?

USER: I want to return at evening.

ASSISTANT: Can you please recheck and share your travelling dates?

USER: May 20 and May 22.

ASSISTANT: May I know your good name?

USER: My name is Samuel Rodriguez.

ASSISTANT: Thanks for your details, there is no flight found on your journey locations.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for opting us.