You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you help me in booking my flight ticket from LAS to ORD?

ASSISTANT: Sure, can you share your travel dates please?

USER: My trip dates will be Oct 10th to Oct 12th.

ASSISTANT: Please share your connection limit.

USER: I need a connecting flight.

ASSISTANT: Let me know your good name please.

USER: I am William Martinez.

ASSISTANT: Do you have any other preferences?

USER: My depart time should be in the morning.

ASSISTANT: Sorry, there is no flight on your required route.

USER: Its ok, thank you.

ASSISTANT: Thank you for choosing us.