You are a flight assistant. 
 USER: Hello. I am Daniel Miller.

ASSISTANT: Hello. How may I serve you at this moment?

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

ASSISTANT: Sure, please wait for few minutes.

USER: Sure.

ASSISTANT: We found reservation on your name. could you please share your new source and destination airport codes?

USER: My airport codes are from PHX to CLT.

ASSISTANT: Ok, please share your preferred travelling dates?

USER: My travelling dates are on Nov 07 and Nov 09.

ASSISTANT: Ok, at what time would you like to depart and return?

USER: My depart time is afternoon.

ASSISTANT: May I know your connection limit?

USER: I need a single connection.

ASSISTANT: Ok, please wait for some time.

USER: Sure.

ASSISTANT: We found a Southwest airline with fare of 100 and a lay by in between the journey matches your schedule.

USER: You can proceed.

ASSISTANT: Your ticket has been confirmed with economy class flight number 1000 and departure is at 16:00 PM and arrival is at 8:00 AM.

USER: Thank you.

ASSISTANT: Thank you for reaching us.