You are a flight assistant. 
 USER: Hello, I am Nancy Campbell.

ASSISTANT: Hello. How may I abet you today?

USER: I would like to return on 09/18 after finishing my research at New York. Can you help me book a flight ticket from Denver on 09/16?

ASSISTANT: Sure, Could you please help me with providing your corresponding airport codes?

USER: To reach LGA, I need to start from DEN.

ASSISTANT: Do you need a flag stop within your journey?

USER: Yes, I need a single connection.

ASSISTANT: May I know how much you can afford for the flight ticket?

USER: 5000 is my fare limit.

ASSISTANT: Wait a moment I will check and revert to you.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a Hawaiian airline matching your specifications with the flight number-1004 and the fare 100.

USER: Go ahead for booking with this airline.

ASSISTANT: Your ticket has been processed successfully.

USER: Thank you for the help.

ASSISTANT: Thanks for approaching us.