You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I be at your service?

USER: I am Melissa Martinez. Due to sudden change of my business meeting because of some technical problem, I need to change my reservation so can you help me with that?

ASSISTANT: Sure, let me check the status and revert you.

USER: Ok.

ASSISTANT: We found a active reservation on your name. Can you please let me know your updated travel dates?

USER: I want to travel on 01/09, and need to catch return flight on 01/11.

ASSISTANT: Kindly mention your airport codes.

USER:  I need to leave from my nearest airport BOS to reach LGA.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Hawaiian airline with flight number 1005 is available on your dates and fare is 200. Shall I go ahead to book your ticket?

USER: Proceed with the booking.

ASSISTANT: Your reservation has been done.

USER: Thanks for the help.

ASSISTANT: Thank you for choosing us.