You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to attend an interview which is schedule at Washington. Can you help me with booking within price 1000?

ASSISTANT: Sure, Can you please provide your source and destination airport codes?

USER: My boarding point is NC-CLT and landing point is DC-DCA.

ASSISTANT: Ok, please provide your travelling dates.

USER: I would like leave on 12/22 and return on 12/24.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, No flights were found with your given details.

USER: Ok, not a problem.

ASSISTANT: Ok, May I know your name?

USER: I am Amy Hernandez.

ASSISTANT: Ok, Thank you for choosing us.