You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am Sharon Lewis. I have to attend a Live Concert at Seattle, could you please help me with booking a flight ticket from IAD to SEA?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: I would like to depart on Jan 8th and return on Jan 10th.

ASSISTANT: May I know your airline preference please?

USER: I am ok with any airlines. And make sure that my return time is afternoon.

ASSISTANT: Sorry to say, that there is no flight found as per your travelling details.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: You are welcome.