You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Amy Lopez. I would like to book a ticket from CLT to IAD, can you please help me out?

ASSISTANT: Sure, I will help you with that. Can I have your travel dates please?

USER: I am travelling on these dates 11/01 and 11/03.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say, no flight is available for you.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for reaching us, have a nice day.