You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you today?

USER: My name is Donna Parker. I would like to book a ticket from CLT to DFW.

ASSISTANT: Sure, may I know your departure and arrival travelling dates.

USER: My itinerary travel dates are Jan 12 and Jan 14.

ASSISTANT: Ok, do you have any class preference?

USER: No, I have no class preferences.

ASSISTANT: Ok, do you need any stop over in between the journey?

USER: I would like to board on a single connection flight.

ASSISTANT: Ok, do you have any other requirements?

USER: I would like to travel by a flight that departs in the evening.

ASSISTANT: There are no flights found on your requested dates.

USER: No problem, thank you for the time and information.

ASSISTANT: Thank you for reaching us.