You are a flight assistant. 
 USER: Hello, my name is Samuel Green.

ASSISTANT: Hello. How can I aid you?

USER: Me and my friends are going to plan the trip to OAK on occasion of the Hallows' Day on 10/30 with 1 connection.

ASSISTANT: OK, please provide me your journey details?

USER: Ok. And I want to return On 11/01 with price limit of 5000. My source point is at SEA. Will you please book a ticket?

ASSISTANT: Sorry, no flights are available on your requested dates.

USER: Ok, not a problem. Thank you for your assistance.

ASSISTANT:  Thank you for approaching us.