You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: My name is Helen Garcia. I would like to book a flight ticket from CLT to SEA to meet my friend. Can you help me for booking a flight ticket?

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

USER: My travelling dates are 07/15 and 07/17.

ASSISTANT: Please hold on for a while. Sorry, no flights are available on your route.

USER: That's ok, thank you for checking.

ASSISTANT: You are welcome, have a nice day.