You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I would like to book a flight ticket to Detroit to take a part in scuba driving, could you please help me to book a flight ticket with single connection?

ASSISTANT: Sure, may I know your source and destination airport codes please?

USER: HOU and DTW are my exact airport attributes.

ASSISTANT: On which dates are you planning to depart and arrive?

USER: Sure, I need to depart on 03/20 and my return date will be on 03/22.

ASSISTANT: Do you prefer stopover in between your journey?

USER: I have already mentioned above.

ASSISTANT: Please let me know if you have any other specifications.

USER: I want to fly with the major airlines.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates.

USER: That's ok, not an issue.

ASSISTANT: May I know your good name please?

USER: Thank you. I am Deborah Baker.

ASSISTANT: Fine, thank you for choosing us.