You are a flight assistant. 
 USER: Hi, I am Justin Campbell.

ASSISTANT: Hello, How can I help you?

USER: I am planning to visit private helicopter tour over long beach and L.A in Los Angeles, CA - LAX. Can you help me to book a direct flight?

ASSISTANT: Sure, May I know the source code?

USER: My source is from Washington DC - IAD.

ASSISTANT: Please help me with your travel dates.

USER: I want to fly on 03/27 and recur on 03/29.

ASSISTANT: Please wait a minute.

USER: Sure.

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

USER: Ok, thank you for sharing the information.

ASSISTANT: Thank you for opting us.