You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Kenneth Lewis here. I want to reserve my ticket from ORD to DEN, can you please help me out?

ASSISTANT: Kenneth Lewis. How can I help you with? Sure, may I know the travel dates?

USER: Sure, my planned dates of journey are from Jan, 17 to Jan, 19.

ASSISTANT: Do you have any travel preferences?

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

ASSISTANT: Do you have any airline preferences?

USER: No.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT:  Frontier Airlines with flight 1003 is providing service on your route with no halts.

USER: But, I need a connecting flight.

ASSISTANT: Sorry to inform that, there are no connecting flights on your route.

USER: Ok, no problem. Thank you for your help.

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