You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Myself Andrew Johnson. Please help me by booking a flight ticket from DFW and EWR.

ASSISTANT: May I know your travelling dates please?

USER: July 18 and 20 are my planned travel dates.

ASSISTANT: Do you need connecting flight or direct flight?

USER: I need a break in my journey.

ASSISTANT: Is there any airline preferences?

USER: No, I don't have any airline preferences.

ASSISTANT: Do you have any other requirements?

USER: I wish to depart in the evening and return in the morning.

ASSISTANT: Sorry, there are no flights found on your trip dates.

USER: That's ok. Thank you.

ASSISTANT: Thank you for reaching us.