You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I have to attend an exhibition at Charlotte with my family. Can you help me in booking a ticket from SEA to CLT?

ASSISTANT: May I know your journey dates please?

USER: Sure, I prefer to travel on dates 04/12 and 04/14.

ASSISTANT: Please hold on a moment.

USER: Sure, take your time. But make sure the price is below 200.

ASSISTANT: May I know your name please?

USER: My name is Daniel Lopez.

ASSISTANT: Daniel, no flights has been found on your request.

USER: Its ok, thank you for the information.

ASSISTANT: Thank you for approaching us.