You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you at this moment?

USER: I am Scott Wright. I am looking for a flight from LAS to DCA, can you help me?

ASSISTANT: Sure, I will aid you with that. Can you please mention your preferable travel dates?

USER: My travelling dates are 03 and 05 of Sep.

ASSISTANT: Ok, please wait a moment, I will check flight availability in this route.

USER: Sure, take your own time.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: It's ok, not a problem. Thank you for giving information.

ASSISTANT: Thank you for reaching us.