You are a flight assistant. 
 USER: Myself Nicholas Smith.

ASSISTANT: Hello, how may I aid you?

USER: I want to change my existing reservation due to some health issues, can you please help me?

ASSISTANT: Sure Smith, I am here to help out in modification of your ticket. Please allow me a moment to check the active reservation on your name in our database.

USER: Ok, take your time.

ASSISTANT: Here I found a active reservation on your name in our reservation list. Please can you provide me your new airport codes?

USER: My new airport codes are from MSP to SFO.

ASSISTANT: Could you send me your new planned dates?

USER: My travel dates are from 05/04 to 05/06.

ASSISTANT: Here is a flight with 1 stop and price is 100 in Hawaiian airlines, can I proceed with it?

USER: Ok, please proceed booking with that flight.

ASSISTANT: Your ticket has been booked with 1009 flight.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.