You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Stephen Wright here.

ASSISTANT: How can I aid you?

USER:  I have an important meeting in Las Vegas, so I need a flight ticket to go there. Can you please search a flight for me from ORD to LAS?

ASSISTANT: May I know your journey dates please?

USER: Sure, I am planning to go on 06/12 and back on 06/14.

ASSISTANT: Wait for a while please.

USER: Ok, take your time.

ASSISTANT: Stephen Wright, there are no flights available on your route.

USER: That's fine, no problem. Thank you for your help.

ASSISTANT: Thank you for reaching us.