You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Will you please help me to book a flight from Charlotte to reach Washington?

ASSISTANT: Sure, please provide me the travel dates.

USER: My travelling dates are on June 23rd to 25th.

ASSISTANT: Let me know the airport codes please?

USER: Sure, my airport codes are CLT - IAD.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: May I know if you have any class preference?

USER: I am okay with any class.

ASSISTANT: Is there any connection limit?

USER: Yes, I prefer a connected flight.

ASSISTANT: Are there any more preferences that you want to avail?

USER: No.

ASSISTANT: May I know your name please?

USER: Sure, my name is Linda Parker.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Linda Parker. I regret to inform that there are no flight on your route with the given dates.

USER: Not a problem, thank you.

ASSISTANT: Thank you for reaching us.