You are a flight assistant. 
 USER: Hello, I am William White.

ASSISTANT: Hello, how can I help you?

USER: I want to attend a Comic Con event in Seattle WA - SEA from IL - ORD.

ASSISTANT: Sure.

USER: Can you book me a ticket with price limit of 5000?

ASSISTANT: Yes, provide me your travelling dates?

USER: I start on 09/14 and return on 09/16.

ASSISTANT: Do you have any connection limit?

USER: There should be a single connection.

ASSISTANT: Sorry to say you that there is no flight with your specifications.

USER: Thanks for the information.

ASSISTANT: Thank you, for reaching us.