You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself William Wight.

ASSISTANT: Welcome to Global flight ticket booking agency. How can I help you William?

USER: I'm having a meeting in CLT location, can you please book a flight ticket from ORD location?

ASSISTANT: Sure, I will help you William. Can you please share your travel dates for booking flight ticket?

USER: My travelling dates are on 11/20 and 11/22.

ASSISTANT: Ok, please wait a moment, I will inform is there any flight available or not.

USER: Ok.

ASSISTANT: Sorry for the inconvenience, no flights available as per your requested dates. Do you want to know any thing else from us?

USER: It's ok. Thank you for the information.

ASSISTANT: Thank you for contacting us, have a good day.