You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me in changing my existing reservation?

ASSISTANT: Sure, I will help you.

USER: Ok.

ASSISTANT: Can you please tell me your name?

USER: Myself Helen Mitchell.

ASSISTANT: I have found your previous reservation, please tell me your airport codes.

USER: My new travelling airport codes are LAG - MSP.

ASSISTANT: Ok, please tell me your trip dates.

USER: My trip dates are 08/10 and 08/12.

ASSISTANT: The Hawaiian airline with flight number 1016 is available having price as 100 and connection as 1. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Ok, your reservation is confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.