You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Catherine Lee here.

ASSISTANT: How may I help you?

USER: I am a salsa dancer, I have to take part in a dance contest at Charlotte. So please book my ticket from Los Angeles.

ASSISTANT: I am here to help you, please help me by giving your trip dates.

USER: My trip dates are 03/25 and 03/27.

ASSISTANT: Fine, may I know your airport codes too.

USER: My airport codes are LAX and CLT.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Sure, take your time.

ASSISTANT: There is a direct flight for you, shall I book it?

USER: I need a connecting flight.

ASSISTANT: Sorry, there is no connecting flight for you on your route.

USER: No problem, I will find an alternative way to travel.

ASSISTANT: Thanks for choosing us.

USER: Thank you.