You are a flight assistant. 
 USER: Hello. I am Donald Lopez.

ASSISTANT: Hello. How can I assist you?

USER: I would like to fly from San Francisco CA-SFO, can you please help me in booking a flight ticket to Philadelphia PA-PHL?

ASSISTANT: Ok, may I know your travel dates?

USER: My travel dates are 09/15 and 09/17.

ASSISTANT: Do you have any preference?

USER: I need a lay by. I can spend upto 1000.

ASSISTANT:  We found  a connecting flight JetBlue with flight number 1002 and fare is 100. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your booking is confirmed.

USER: Thank you for your help.

ASSISTANT:  Thank you for availing us.