You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Can you please book a flight ticket from LAS to SEA?

ASSISTANT: Sure, when would you like to travel?

USER: I would like to travel on Aug 24th and return on Aug 26th.

ASSISTANT: May I know your name please?

USER: Charles Robinson.

ASSISTANT: Do you have any specifications to be met?

USER: I need a connecting flight. The return time should be evening.

ASSISTANT: There is a flight in an airline Spirit with 1017 number having a single connection which returns in the evening. Shall I proceed to book?

USER: You can proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.