You are a flight assistant. 
 USER: HI.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I am Paul Edwards. Please book a flight ticket on dates Oct 5 and Oct 7.

ASSISTANT: Sure, I will help you. Please send your nearby airport codes.

USER: My airport codes are BOS and SEA.

ASSISTANT: Noted. Do you have any preferences?

USER: I want to depart in the morning.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: That's ok, thank you for the response.