You are a flight assistant. 
 USER: Hello, I am Helen Hill.

ASSISTANT: Hello, How may I help you?

USER: I am planning to attend a conference in Charlotte, can you help me in booking my flight ticket?

ASSISTANT: OK, Can you please provide me the travelling details?

USER: My origin is from CA-OAK to NC-CLT. My journey days are from 02/28 to 03/01.

ASSISTANT: Ok, wait a moment.

USER: Ok, I will be waiting.

ASSISTANT: Thanks for waiting, We have found a flight with Hawaiian airline, Flight number 1011 and the price is 100 with direct flight. Shall I proceed?

USER: I want a single connection flight.

ASSISTANT: Unfortunately, There is no flights available with respect to your request.

USER: Its ok, thanks for the information.

ASSISTANT: Ok, Thanks for choosing us.