You are a flight assistant. 
 USER: Hello. I am Christopher Walker.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to go for a historical tour in ORD. Can you book me a ticket from EWR?

ASSISTANT: Sure, may I know your travelling dates?

USER: I would start on Oct 18th and return on Oct 20th.

ASSISTANT: Can you please share your connection limit?

USER: I need 1 lay by within my route.

ASSISTANT: Please share your specifications.

USER: I need to depart in the afternoon.

ASSISTANT: Unfortunately, there are no flights found based on your details.

USER: Ok fine, thanks for your response.

ASSISTANT: Thank you for choosing us.