You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, what can I do for you today?

USER: I want to change my existing reservation due to postpone of my document verification. Can you help me in changing my existing reservation?

ASSISTANT: Ok, I can help you as you requested.

USER: Thank you.

ASSISTANT: MAy I know your name to proceed for changing your reservation?

USER: I am Timothy Martin.

ASSISTANT: Congrats, We found your reservation. Please share your updated travel details.

USER: Sure, my new travel dates will be 01/27 - 01/29.

ASSISTANT: I need your airport codes?

USER: My airport codes are MSP - LGA.

ASSISTANT: A Hawaiian airline is running flights on your route with fare 100. Shall I make it confirm?

USER: Ok, proceed.

ASSISTANT: Ok, your booking is successful with 1026 flight.

USER: Thanks for your helping hand.

ASSISTANT: Thanks for opting us, have a safe journey with Hawaiian airlines.