You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Could you please help me to book my flight ticket from PHL to SFO? Because I have to attend an event at San Francisco.

ASSISTANT: Sure, I am here to help you. Could you please share your travelling dates to search a flight?

USER: I want to depart on 09/30 and return on 10/02.

ASSISTANT: Let me know your name?

USER: My name is George Smith.

ASSISTANT: There is a flight-1029 with price 100 from Spirit airlines, shall I proceed?

USER: That's perfect! You can book the ticket.

ASSISTANT: Ok, your booking is done.

USER: Thank you very much for your help.

ASSISTANT: Welcome.