You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I have to attend a Music Concert at San Francisco, could you please help me with booking a flight ticket from DTW to SFO?

ASSISTANT: Sure, may I know your travel dates?

USER: I would like to depart on May 9th and return on May 11th.

ASSISTANT: Please share me me your name.

USER: I am Matthew Harris.

ASSISTANT: Do you have any specifications?

USER: I am looking for a connecting flight.

ASSISTANT: Sorry, there is no flight at this moment.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you.