You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Samuel Wilson. I am planning to go for Redwood regional park at Oakland, OAK. Can you please book a ticket on 11/12?

ASSISTANT: Sure, could you help me with your source code?

USER: Source code is San Francisco, SFO.

ASSISTANT: Do you have any preferences?

USER: I need connecting flight.

ASSISTANT: We found a flight on Southwest airline, flight number 1003 with the fare of 100. Shall I proceed for booking?

USER: Once please check with this return date 11/14.

ASSISTANT: Okay. Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching our agency.