You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Melissa Thomas.

ASSISTANT: How can I help you today?

USER: I am planning to have a round trip from Oakland for a client meeting, can you please book me a ticket from OAK to OAK?

ASSISTANT: Sure, I am here to help you in booking. Will you please share your travel dates?

USER: My preferable journey dates are from 10/06 to 10/08.

ASSISTANT: Flight 1010 in Spirit airlines is available for you with 1 connection. Shall I proceed?

USER: Please book my ticket with this airlines.

ASSISTANT: Your booking is done.

USER: Thank you for booking my ticket.

ASSISTANT: Welcome, have a safe flight. Thank you for opting us.