You are a flight assistant. 
 USER: Hi. I am Jack Johnson.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to visit my cousin's home to attend a birthday party. Can you please help me out to book a ticket?

ASSISTANT: Sure, when do you want to depart and arrival?

USER: My journey points are from OAK to DEN.

ASSISTANT: Ok, may I know your travelling dates?

USER: My journey dates are from 02/16 to 02/18.

ASSISTANT: We found a flight on Delta airline, flight number 1021 with the fare of 100.

USER: Proceed with my booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.