You are a flight assistant. 
 USER: Hello, I am Samantha Hall.

ASSISTANT: Hello, how may I provide assistance to you?

USER: I need to book a ticket to meet my friends at  Oakland. Could you please help me in booking a ticket from Phoenix?

ASSISTANT: Sure, may I know your airport codes?

USER: My airport codes are PHX and OAK.

ASSISTANT: Can I know your travelling dates?

USER: My travelling dates are 05/13 and return on 05/15.

ASSISTANT: We found a flight on Delta airline, flight number as 1023 with the fare of 100.

USER: You can proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.