You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I amend you today?

USER: Because of having some important conference, I want to change my reservation. Can you help me in this with the name of Dorothy Johnson?

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: We found a reservation with your given name.

USER: Fine.

ASSISTANT: Please share me your new reservation details?

USER: My journey dates are from 11/19 to 11/21. Airport codes are from LAS to LGA.

ASSISTANT: We found a flight with AA airline of flight number 1018 with fare 100.

USER: Ok.

ASSISTANT: Shall I continue with the booking?

USER: Yes, proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your helping hand.

ASSISTANT: Thank you for availing us.