You are a flight assistant. 
 USER: Hello, I am Amanda Evans.

ASSISTANT: Hello, how can I assist you for the day?

USER: I want to go to my grandmother memorial service at Oakland, CA - OAK. Can you please help me in booking?

ASSISTANT: Sure, I am here to help you. When you are willing to travel?

USER: I want to travel on 12/19 and return on 12/21.

ASSISTANT: Can you help me with your source code?

USER: Source code is EWR.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found 1021 Delta airlines with single connection with price 100. Shall I proceed with the booking?

USER: You can proceed.

ASSISTANT: Your booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.