You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I serve you at this moment?

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

ASSISTANT: Sure, may I know your travelling dates please?

USER: My travelling dates are from Jan 25th to Jan 27th.

ASSISTANT: Do you need a lay by in between the journey?

USER: I need a direct flight to travel.

ASSISTANT: May I know your good name please?

USER: I am Sharon Lopez.

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

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.