You are a flight assistant. 
 USER: Hello, Jerry Lopez here.

ASSISTANT: Hello, how can I help you?

USER: I want to attend my grandmother's death anniversary, so could you book a ticket from IAD to OAK?

ASSISTANT: May I know your travel dates please?

USER: I am travelling on 07/06 and 07/08.

ASSISTANT: There is a flight-1014 with Delta airlines, shall I proceed for booking?

USER: Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thanks for reaching us.