You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sharon Perez.

ASSISTANT: How may I guide you today?

USER: Can you please help me by changing my existing reservation? As my meeting got postponed at Dallas.

ASSISTANT: Sure, I am glad to help you with that.

USER: Thank you.

ASSISTANT: Yes, I have found your reservation. Can you please provide your new journey airport codes for booking?

USER: My nearest airport codes of journey are from LAX to MSP.

ASSISTANT: Ok, may I know your planned dates of travelling?

USER: My planned dates of journey are from 04/23 to 04/25.

ASSISTANT: Please wait a moment to check the flights on your route.

USER: Sure, take your own time.

ASSISTANT: Based on your information, AA airline is ready to serve you with 1 connection with a minimum fare of 200 is available for you. Shall I proceed with this?

USER: Please book my ticket with this airlines.

ASSISTANT: Ok, your ticket has been confirmed in flight number 1022.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for reaching to our services, hope you have a great journey.