You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to travel from LAS to ORD for my business trip, can you please help me out with that?

ASSISTANT: Sure, I will help you. Can you please share your planned travel dates?

USER: Thank you for accepting my request, my boarding is on Oct 30 and please book my return ticket on Nov 01.

ASSISTANT: Can I have your name please?

USER: Sure, my name is John Lopez.

ASSISTANT: Do you prefer a connecting flight?

USER: Yes.

ASSISTANT: Do you have any other specifications?

USER: I would like to return in morning time.

ASSISTANT: Please hold on a moment.

USER: Sure, take your time.

ASSISTANT: John Lopez, no flights has been found on your planned travel dates.

USER: Oh! Sad to hear that. Anyway, I will find another alternative. Thank you for the information.

ASSISTANT: Thank you for approaching us.