You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I need your assistance in booking a flight ticket. Please help me with it.

ASSISTANT: Sure, I will help you to book a ticket.

USER: Thank you.

ASSISTANT: Can you please share your travelling dates?

USER: April 1 and 3 are my planned travelling dates.

ASSISTANT: Please share your airport codes.

USER: ATL and DFW are the respective airport codes.

ASSISTANT: Do you have any limits on number of connections?

USER: I need a direct flight.

ASSISTANT: Let me know your class preference.

USER: I am good with an class to fly.

ASSISTANT: Is there any other specifications?

USER: I prefer to return in the morning.

ASSISTANT: May I know your name?

USER: My name is Rachel Jones.

ASSISTANT: Sorry, there are no flights found based on your details.

USER: That's ok. Thank you.

ASSISTANT: Thank you for choosing us.