You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: Can you please help me in booking a flight ticket from DCA to MSP?

ASSISTANT: Sure. Can I know your travelling dates?

USER: I want to fly on May 14 and return on May 16.

ASSISTANT: May I know your name?

USER: Myself Gary Miller.

ASSISTANT: Is there any other specifications?

USER: I would like to depart in the morning time.

ASSISTANT: Ok. Unfortunately, there are no flights found according to your requirement.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.