You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best can I guide you today?

USER: I want to book a flight ticket from OAK to SFO. Could you help me in booking?

ASSISTANT: Sure, when are you planning to start and return on?

USER: My travelling dates are from May 10 - 12.

ASSISTANT: Do you need a connecting flight?

USER: I prefer for connecting flight.

ASSISTANT: Can I know your good name?

USER: Andrew Johnson.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Thank you for your details, we found a connecting flight 1001 in class economy which is in spirit airline. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for helping me.

ASSISTANT: Thank you.