You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: Dennis Johnson here. I need to reserve a ticket from DTW to IAH, can you help me?

ASSISTANT: Sure, I am glad to help you with that. Can you please provide your preferable dates of travelling?

USER: My trip dates are June 05 to 07.

ASSISTANT: Do you have any class preference?

USER: No, I only have a connecting flight with normal-cost.

ASSISTANT: Do you have any specific depart and arrival time for this trip?

USER: No.

ASSISTANT: Any connection limit do you have?

USER: I already mentioned you.

ASSISTANT: Please be on hold to check the flights.

USER: Ok.

ASSISTANT: We regret to inform you that, there are no normal cost flights are available for your journey.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us, have a great day.