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

ASSISTANT: Hello, How can I assist you?

USER: I would like to travel to Los Angeles LAX to enjoy Innovation festivals by sharing new ideas. Can you make a reservation with fare 1000?

ASSISTANT: Sure, May I know the source code?

USER: Sure, my boarding point is IAD.

ASSISTANT: Please help me with your travel dates.

USER: Sure, I need to depart on 02/15 and 02/17.

ASSISTANT: Please wait a minute.

USER: Sure.

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

USER: Ok, not an issue. Thank you for your assistance.

ASSISTANT: Thank you for opting us.