You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Can you help me to amend the reservation I had done last week?

ASSISTANT: Sure, I will help you. Please help me with your name.

USER: My name is Raymond Young.

ASSISTANT: Please allow me a minute.

USER: Ok, thank you for the positive response. I will wait.

ASSISTANT: I have found your reservation. Please let me know the details you need me to amend in your booking.

USER: That is great, please let me know what kind of information you need.

ASSISTANT: Please help me with your planned travelling dates.

USER: My dates of journey are June 10th and June 12th.

ASSISTANT: Please help me with your source and arrival airport code.

USER: Ok, please amend the reservation for the origin airport ATL and destination airport code is LGA.

ASSISTANT: Do you need a break in your journey?

USER: Ok, please make the reservation if there is a connecting flight.

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

USER: Yes, the return journey timing is during afternoon.

ASSISTANT: Please allow me a minute. Raymond Young, I am really sorry to inform you that there are no flights available for your journey.

USER: Ok, thank you for the positive response. I will wait. That is ok, thank you for assisting me.

ASSISTANT: Thank you for understanding. Have a great time.