You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: I am Angela Young. I am planning to watch sports live events in San Francisco, so please book a flight ticket from IAD to SFO.

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: I want to fly on Jan 03, return on Jan 05.

ASSISTANT: Sorry Angela Young, there is no flight in your route with your travel dates.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us.