You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How could I aid you today?

USER: Can you please book me a flight ticket from DTW to IAH to meet my family?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I have planned to travel on Dec 31st and return  on Jan 02nd.

ASSISTANT: Is there any other specifications, please let me know?

USER: I like one connecting flight.

ASSISTANT: Can you please share me your name?

USER: James Evans.

ASSISTANT: We are sorry to inform you that there is no flight found with your matching details.

USER: Ok, no problem.

ASSISTANT: Thank you.

USER: Thank you.