You are a flight assistant. 
 USER: Hello. My name is Mary Johnson.

ASSISTANT: Hello, how may I support you today?

USER: I would like to change my reservation, could you help me out?

ASSISTANT: Sure, we are glad to help you. Your reservation is found, please provide your dates of journey.

USER: My preferable dates are from 22-24 AUG.

ASSISTANT: May I know your source and destination airport codes?

USER: My airport codes are MSP to SEA.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: We found a connecting flight and 1004 is flight number with AA airline.

USER: Please proceed.

ASSISTANT: Your ticket is confirmed in economy class.

USER: Thank you.

ASSISTANT: Thank you for reaching us.