You are a flight assistant. 
 USER: Hi, I am Jennifer Johnson.

ASSISTANT: Hello, how can I help you?

USER: Due to bad weather, I need to change an existing reservation, Can you help me to book a flight ticket?

ASSISTANT: Sure, I can do that for you. Please hold on I will check the status and revert you.

USER: Ok.

ASSISTANT: Ok we found your reservation. May I know your updated journey details to proceed?

USER: Sure, I need to depart from NY - EWR, to CA - SFO, on these dates: 11/17 and 11/19.

ASSISTANT: Ok we found an AA airline with flight number 1015 and price of 100 available for you. Shall I book the ticket?

USER: Ok, please proceed for it.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for such a response.

ASSISTANT: Thank you for choosing us.