You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist  you?

USER: I am Benjamin Thomas. Can you change my existing reservation?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: We found a reservation in your name. can you please provide your new journey details.

USER: My airport codes are from 02/29 to 03/02. My source and destination codes are from DTW to IAH.

ASSISTANT: AA airlines with single connection and price is 100 of 1005 flight. Shall I proceed?

USER: Ok, Proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you.