You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Steven Scott here.

ASSISTANT: How may I aid you at this moment?

USER: I'm planning to meet my friend, please book a ticket from LAS to ORD.

ASSISTANT: Sure, please share your travelling dates.

USER: Sure, my planned departure and return travel dates are 17th and 19th of January.

ASSISTANT: Ok, do you need any lay by in between the journey?

USER: I'm looking for flights with 1 connection.

ASSISTANT: Ok, may I know your class preference?

USER: I don't have any class preference but my depart time must be afternoon and return time must be evening.

ASSISTANT: Ok, do you have any other preferences?

USER: No, I don't have any other specifications more than that.

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

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for reaching us.