You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: My name is Ruth Hall.

ASSISTANT: Glad to meet you Ruth.

USER: Could you do me a favour in booking my reservation from 05/06 to 05/08?

ASSISTANT: Sure, I can help you. May I know your airport codes?

USER: Sure, my airport codes are from CLT to ORD.

ASSISTANT: Please give me a moment to find the flight. Thank you for waiting. Sorry to say Ruth, no flight is available on your scheduled dates to book your ticket.

USER: It's ok, thank you.

ASSISTANT: Have a nice day, thank you for reaching us.