You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

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

ASSISTANT: Please share me your travel dates.

USER: My travel dates are 04/21 and 04/23.

ASSISTANT: Do you have any specifications?

USER: I can spend upto 1000.

ASSISTANT: Please stay online, I will check best flight for you and revert to you.

USER: Sure.

ASSISTANT: We found a connecting flight with a Southwest airline and 1007 is flight number with a fare of 100. Shall I proceed?

USER: You can proceed.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.