You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Jessica Brown. Could you please help me in flight ticket booking process from LAS to DCA?

ASSISTANT: Sure, help me with the trip dates?

USER: Thank you, I want to take off on May 14 and book my return ticket also on May 16.

ASSISTANT: Do you have any preferences?

USER: I want to return in morning time.

ASSISTANT: Do you need any break in your journey?

USER: I want 1 break in between my journey so please check with this details.

ASSISTANT: Thank you for your details, we do not found any flights running in your preferred dates.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.