You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Actually, I was planning to change my trip location. Can you please help me with changing my previous booking?

ASSISTANT: Sure, may I know your good name?

USER: My name is Donna Thomas.

ASSISTANT: Ok, please be on hold.

USER: Ok, I will be waiting for your response.

ASSISTANT: We found your reservation, will you please share me your new airport codes?

USER: My airport codes are from PHX to PHL.

ASSISTANT: May I know your planned journey dates?

USER: My journey dates are from Dec 2nd to Dec 4th.

ASSISTANT: Ok, may I know your connection limit?

USER: I need 1 connecting flight.

ASSISTANT: Is there any class preference?

USER: I need a business class reservation for this journey.

ASSISTANT: Ok, do you have any other specifications?

USER: No, thank you for asking.

ASSISTANT: Please be on hold for a while.

USER: Sure.

ASSISTANT: Sorry, there are no flights found with your name.

USER: Oh! That's sad to know. Anyways, thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.