You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to change my existing reservation due to some issues, can you please help me with that?

ASSISTANT: Sure, can I know your name?

USER: Sure, I am Rachel Williams.

ASSISTANT: We found reservation on your name, please provide your new journey dates?

USER: Sure, my journey dates are June 30 and July 02.

ASSISTANT: May I know your airport codes?

USER: I want to fly from MCO to LAS.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a flight with single connection.

ASSISTANT: Ok, we found direct flight 1003 in Jet Blue Airlines with fare of 100. Shall I proceed?

USER: Yes, you can.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.