You are a flight assistant. 
 USER: Hello, Ruth Parker here.

ASSISTANT: Hello, how may I guide you?

USER: I would like to take my friends at The Mirage which is at LAs Vegas for giving them my birthday treat, please book a flight ticket for me.

ASSISTANT: Sure, can I know the details of travel?

USER: My preferable dates are 12/15 to 12/17. My source and destination codes are OAK and LAS.

ASSISTANT: JetBlue airlines flight 1003 matches with your preferences, can I proceed?

USER: Sure.

ASSISTANT: Your ticket is booked.

USER: Thank you for your service.