You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I hand helping to you?

USER: I am Jeffrey Collins want to attend a workshop at Denver, can you book a ticket from OAK to DEN?

ASSISTANT: Sure, can you please provide me the dates of your trip?

USER: Sure, my travelling dates will be 09/21 and 09/23.

ASSISTANT: I found a 1 lay by in your journey in AA airlines, can I proceed with booking?

USER: Yes, proceed with my booking.

ASSISTANT: Ok, the ticket booking is done in 1008 flight number.

USER: Thank you.

ASSISTANT: Most welcome.