You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to travel from DTW to LGA. Can you help me to book a flight ticket?

ASSISTANT: Sure, let me know your travelling dates?

USER: I want to fly in the flight on Aug 04 and Aug 06.

ASSISTANT: Do you have any connection limit?

USER: I want to travel in a connecting flight.

ASSISTANT: Is there any other preferences?

USER: No.

ASSISTANT: May I know your good name?

USER: Christopher Carter.

ASSISTANT: Thanks for your details, there is no flight found on your desired journey routes.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for opting us.