You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to travel from DTW to LAX. Can you help me to book a flight ticket?

ASSISTANT: May I know your travel dates?

USER: I want to fly in the flight on June 20 and June 22.

ASSISTANT: Do you have any preferences?

USER: I want to travel in business class.

ASSISTANT:  Do you have any other preferences?

USER: I want to have a connection of 1.

ASSISTANT: May I know your name?

USER: Paul Gonzalez.

ASSISTANT: Sorry, I did not find any flights for you.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for reaching us.