You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What type of services do you want from my side?

USER: I am Ruth Thompson, want to change my existing reservation. will you please help me?

ASSISTANT: Sure, I will help you with that.

USER: Ok.

ASSISTANT: Please wait a moment to check existing reservation status.

USER: Sure.

ASSISTANT: Thank you for waiting. I have found your reservation, will you please help me by providing changed airport codes?

USER: My airport codes are from MCO to DCA.

ASSISTANT: Ok, please provide me your travel dates too.

USER: My travelling dates are from 08/20 to 08/22.

ASSISTANT: Ok, please wait a moment to check flight availability.

USER: Sure.

ASSISTANT: Thank you for waiting. I have found a flight 1005 of AA airlines with connection 1. Shall I proceed with booking?

USER: Ok, please proceed.

ASSISTANT: Ok Ruth, your ticket has confirmed after altering of your previous reservation.

USER: Ok, thank you for your service.

ASSISTANT: Thank you for choosing us. Have a safe journey.