You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER:  My name is Kenneth Edwards. I would like to book a ticket from EWR to LAS, to attend a conference.

ASSISTANT: Sure, help me with the trip dates?

USER: My itinerary travel dates are July 02 and July 04.

ASSISTANT: Do you have any class preferences?

USER: No, I have no class preferences.

ASSISTANT: Please let me know if you have any other requirements?

USER: Yes, I would like to travel by a single connection flight. Depart time should be in the afternoon and return time should be in the evening.

ASSISTANT: Sorry, no flights found with your given criteria.

USER: No issue, thank you for the information.

ASSISTANT: Thank you for reaching us. Have a nice day.