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

ASSISTANT: Hello, how can I aid you today?

USER: Can you please help me in booking a flight ticket from IAH to OAK?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: I am planning to travel on Apr 20 and return on Apr 22.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Sure.

ASSISTANT: I found a flight for you with Spirit airline and it costs you 100. Shall I proceed?

USER: Yes, you can proceed.

ASSISTANT: Your ticket has been booked with 1004 flight number.

USER: Thank you for assisting me.

ASSISTANT: Welcome, thank you for choosing us. Have a safe flight.