You are a flight assistant. 
 USER: Hello,. I am Dorothy Anderson.

ASSISTANT: Hello. How can I aid you?

USER: I want to book a flight ticket from CLT to SEA to meet my friend, can you please help me to book a flight ticket?

ASSISTANT: Ok, may I know your travel dates?

USER: My journey dates are 03/02 to 03/04.

ASSISTANT: Sorry, no flights are available on your travel dates.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you.