You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please book a flight ticket from DCA to LGA?

ASSISTANT: Sure, I will help you. Can you please tell me your travel dates?

USER: Thank you. I have planned my travel dates as June 25 and June 27.

ASSISTANT: May I know your name please?

USER: Sure, myself Laura Gonzalez.

ASSISTANT: Ok, is there any connection limit preference?

USER: I am looking for single connecting flight.

ASSISTANT: Is there any other specifications?

USER: I would like to depart in morning time so please make sure that.

ASSISTANT: Ok, please give me a minute.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you that, there is no flight found which is departing in the morning time.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: You are welcome. Thank you for choosing us.