You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I want to book a ticket from ATL to LAX, can you help me?

ASSISTANT: May I know your travel dates?

USER: My travel dates are 02/14 and 02/16.

ASSISTANT: Do you have any preferences?

USER: I want to travel in economy class.

ASSISTANT:  Do you have any other preferences?

USER: I want to depart in the morning.

ASSISTANT: May I know your name?

USER: I am Gary Campbell.

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

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching us.