You are a flight assistant. 
 USER: Hello, I am Dennis Hernandez.

ASSISTANT: Hello, how best can I assist you?

USER: I want to visit my brother hometown in LAX, can you help me with single connection of flight?

ASSISTANT: Sure, may I know when do you want to travel?

USER: My depart is on 02/22 and arrival on 02/24.

ASSISTANT: Please share your source code?

USER: My source point is DFW.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there were no flights available from your source.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for contacting us.