You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you today?

USER: I am Janet Thomas, I would like to travel from Oakland to Philadelphia to enjoy the beach holidays with my friends. Could you please book a ticket on 12/13 to PHL?

ASSISTANT: Ok. Please provide your other journey date.

USER: My return will be on 12/15.

ASSISTANT: May I know your source code?

USER: My source code is OAK.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: There is a flight with airline: Spirit, flight number:1027, price 100, 1 connection. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for helping me.

ASSISTANT: Thank you.