You are a flight assistant. 
 USER: Hello. I am Anna Robinson.

ASSISTANT: Hello, How can I assist you?

USER: I want to travel from CLT to LAX. Can you book a flight ticket for me?

ASSISTANT: Sure, May I know the travel dates?

USER: I want to travel on 08/20 and 08/22.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for reaching us.