You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Emma Perez here. Due to some reason, I changed my plans. Can you change my reservation?

ASSISTANT: Sure Perez, please wait for while. There is reservation found, so please share your new destination and source location.

USER: My new source is ATL and destination is ORD.

ASSISTANT: Please share your dates, Perez.

USER: In October, I like to go on 10/12 and come back on 10/14.

ASSISTANT: There is flight-1003 available  with JetBlue, shall I book the ticket.

USER: Yes.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thanks for contacting us. Have a great journey.