You are a flight assistant. 
 USER: Hello. My name is Paul Gonzalez.

ASSISTANT: Hello, how can I serve you today?

USER: I am looking to book a flight ticket to meet my friend in Houston, can you help me for booking a flight ticket from DTW to IAH?

ASSISTANT: Sure, please share me your planned journey dates?

USER: My travelling dates are May 05 and May 07.

ASSISTANT: May I know your depart and return flight timing?

USER: My departure time is evening.

ASSISTANT: Please mention your connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other requirement?

USER: No.

ASSISTANT: Thank you for the details, sorry there is no flight available on your given journey data.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us, we hope see you again.

USER: Welcome.