You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am planning to book a flight from MSP to reach DCA, will you please help me in booking?

ASSISTANT: Sure, help me with the trip dates?

USER: My trip dates are on Sept 14th to 16th.

ASSISTANT: May I know your name please?

USER: Sure, my name is Dennis Turner.

ASSISTANT: Do you have any preferences?

USER: I would like to return in morning time.

ASSISTANT: Sorry, no flights were available at this moment.

USER: No issues, thank you.

ASSISTANT: Thank you for reaching us.