You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I aid you?

USER: I would like to participate in the College Bowls Mens Football game, which is going to be held at Washington. Can you reserve me a airline with the name of Elizabeth Thompson?

ASSISTANT:  Sure, Can you help me with your travelling dates?

USER: Ok, I prefer to travel on the dates of 01/04 and return on 01/06.

ASSISTANT: Provide me your airport codes.

USER: My Source is from Oakland, CA - OAK. My destination is at DC - IAD. Make sure that it was a direct flight.

ASSISTANT: Ok Please wait a while.

USER: Sure.

ASSISTANT: Thanks for your time. There are no flights found according to your requirements.

USER: Ok, not an issue. Thank you for the service.

ASSISTANT: Thank you for choosing us.