You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Please help me to book me a flight ticket from OAK to SFO to meet my old friends.

ASSISTANT: Sure, I can help you with that. May I know your planned departure and return travel dates please?

USER: I have planned to travel on Feb 22nd and return on on Feb 24th.

ASSISTANT: May I know in which class do you prefer to travel?

USER: I am ok with any class.

ASSISTANT: Do you have any airline preference please?

USER: No, I am flexible with any airline.

ASSISTANT: Can you please let me know if you have any other specifications?

USER: No.

ASSISTANT: Can I have your good name please?

USER: Myself Nicholas Martinez.

ASSISTANT: Spirit airlines is providing a flight on that route with ticket fare of 100, it's departure time is 6:00 hours and returns at 3:00 hours. Shall I proceed for booking?

USER: Yes, please.

ASSISTANT: I have successfully booked you an economy class ticket in flight-1003, have a safe journey.

USER: Thank you.

ASSISTANT: Thank you for choosing us.