You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Joseph Rodriguez.

ASSISTANT: How may I help you?

USER: I want to change my reservation, can you help me out?

ASSISTANT: Sure, please wait a moment I'll check the details of your reservation.

USER: OK.

ASSISTANT: Can you please provide your new city names?

USER: My new airport codes are CLT and DFW.

ASSISTANT: OK, can you mention your travel dates?

USER: My travels dates are from 01/03 to 01/05.

ASSISTANT: OK, there is a flight 1022 in airline Hawaiian having 1 connection and price is 300. Shall I proceed?

USER: OK, please book the ticket.

ASSISTANT: OK Joseph, your booking is done. Have a great journey!.

USER: Thank you for your help.