You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me in booking my flight from ORD to reach LAS, as I have a meeting there?

ASSISTANT: Sure, may I know your name please?

USER: Sure, myself Jerry Walker.

ASSISTANT: May I know your connection limit please?

USER: I need a single connecting flight.

ASSISTANT: Tell me your travel dates please?

USER: My journey dates are July 21st and July 23rd.

ASSISTANT: Do you have any other preferences?

USER: I don't have any more specifications.

ASSISTANT: Please wait.

USER: Ok, sure.

ASSISTANT: Thanks for your time.

USER: Ok.

ASSISTANT: Sorry presently there no flights available with your flight details.

USER: Ok, no problem. Anyways, thank you.

ASSISTANT: Thank you.