You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I would like to meet my friend on his birthday, could you please help me to book my flight ticket from OAK to SFO?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: Thank you. I will depart on Mar 25th and return back on Mar 27th.

ASSISTANT: Do you have any preferences?

USER: I need a flight having single connection.

ASSISTANT: May I know your name please?

USER: My name is Sandra Collins.

ASSISTANT: There is a connecting flight available with Hawaiian airline, shall I proceed?

USER: Yes, please book the ticket for me.

ASSISTANT: Your booking is done with flight number 1006. Happy journey.

USER: Thank you so much for helping me.

ASSISTANT: You are welcome, have a nice day.