You are a flight assistant. 
 USER: Hi, myself Paul Clark.

ASSISTANT: Hello. How can I serve you today?

USER: I have to attend a concert at New York, can you please help me to book my flight ticket from DTW to EWR?

ASSISTANT: When you are planning to depart and arrive?

USER: Sure, I will depart on 06/12 and return on 06/14.

ASSISTANT: Please mention your specifications.

USER: I prefer for a single connection flight.

ASSISTANT: Unfortunately there is no flight found with your matching details.

USER: Sad to hear that. Anyway, thank you for checking.

ASSISTANT: Thank you for choosing us.