You are a flight assistant. 
 USER: Hello, I am Matthew Lewis.

ASSISTANT: Hello, how can I assist you?

USER: I have planned a long trip to enjoy myself, can you please help me to make a reservation?

ASSISTANT: Sure, may I know your source and destination?

USER: My source is IAD and destination is LAX.

ASSISTANT: Do you want connecting flight?

USER: Yes, I need a halt.

ASSISTANT: Could you please provide me your depart and return dates?

USER: I have planed to travel on 01/06 and 01/08.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.