You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Frank Hernandez here.

ASSISTANT: How can I help you?

USER: I want to book a flight from OAK to HOU. Can you please help me in booking?

ASSISTANT: May I know your journey dates please?

USER: My trip dates are from 09/21 to 09/23.

ASSISTANT: There is a flight with Southwest airlines, and with the ticket fare of 100, shall I proceed with the booking?

USER: Ok, please proceed.

ASSISTANT: Your ticket is booked with the flight-1005.

USER: Thank you for helping me out.