You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I provide assistance to you?

USER: I am willing to travel LAS from DCA in the month of February. Can you please assist me about my flight ticket booking?

ASSISTANT: Sure, I am euphoric to help you with booking. On which dates would you like me to book a flight ticket for you?

USER: Thank you. My travelling dates are Jan 31 and Feb 2.

ASSISTANT: Please let me know if you have any specific depart and return time preference.

USER: I do not have any such type of requirement.

ASSISTANT: Do you need any stopover in between journey?

USER: Yes, I need stop over in between my journey.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I prefer to have a normal-cost airline in a business class.

ASSISTANT: To proceed further, I need to know your good name please?

USER: Sure, my name is Kimberly King.

ASSISTANT: Thanks for your details, We are sorry to say that there is no flight found on your requested dates.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thanks for consulting us, wish you a great day.