You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I am Larry Carter need to book a flight ticket  to DEN from LGA, can you please help me in booking?

ASSISTANT: Yes, tell me your travel dates please?

USER: My travel dates are from Jul 18 to Jul 20.

ASSISTANT: May I know your departure and return time please?

USER: I would like to return in the evening.

ASSISTANT: Do you have any other preferences?

USER: I need a connecting flight.

ASSISTANT: Thanks for your patience. I have found south west airlines which flies with one connection. It departs at 02:00 PM and arrives at 05:00 AM.

USER: I need a flight which returns in the evening.

ASSISTANT: Sorry the flight will be departing at 05:00 AM and arriving at 02:00 AM.

USER: Ok, you can proceed.

ASSISTANT: Yes, I have confirmed your flight ticket with flight number 1003.

USER: Thank you.

ASSISTANT: Thank you.