You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Can I make changes to my flight ticket once I have made a booking? If yes please change my travel date for my business trip.

ASSISTANT: Yes, you can. I will help you with that.

USER: Ok.

ASSISTANT: Please help me with your name.

USER: I am Angela King.

ASSISTANT: I have found your reservation details. Please help me with your source and arrival airport codes.

USER: The airport codes are from PHX to MSP.

ASSISTANT: Please help me with your planned travelling dates.

USER: The travel dates are from Feb 11 to Feb 13.

ASSISTANT: Do you need a break in your journey?

USER: I would like to prefer a stopover in my journey.

ASSISTANT: Do you have any other preferences in your journey?

USER: No.

ASSISTANT: Angela King, I am really sorry to inform you that there are no flights available for your journey.

USER: Ok, that is not a problem.

ASSISTANT: Thank you for understanding.

USER: Thanks for your help.

ASSISTANT: Thank you for reaching us. Have a great time.