You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Nicholas Clark here, I want to reserve my ticket from ATL to DFW, can you please help me?

ASSISTANT: Yes, tell me your travel dates please?

USER: Sure, my planned dates of journey are from Sep, 09 to Sep, 11.

ASSISTANT: Do you have any preferences?

USER: Yes, I need a depart time at evening.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for your patience. I have found United airlines which flies with one connection. It departs at 02:00 AM and arrives at 08:00 AM.

USER: Ok, please proceed with this booking.

ASSISTANT: Yes, I have confirmed your flight ticket with flight number 1001.

USER: Thank you for your help in booking.

ASSISTANT: Thank you.