You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I need to go Washington to meet my friend so please help me with flight ticket booking from New York city.

ASSISTANT: Sure, can you share me your travelling dates?

USER: Thank you. I have planned my travel dates as Sept 24 and Sept 26.

ASSISTANT: Please mention your travelling codes.

USER: Sure, LGA and DCA are the airport codes of my travelling locations.

ASSISTANT: Do you have any connection limit?

USER: I would prefer direct flight so please make sure that.

ASSISTANT: Is there any time concern?

USER: Yes, I am looking for normal cost airlines.

ASSISTANT: Let me know if you have any other specifications?

USER: No, I am ok with any class.

ASSISTANT: May I know your good name please.

USER: Sure, myself William Collins.

ASSISTANT: Sorry, no flights are found on your travelling dates.

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

ASSISTANT: Thank you for reaching us.

USER: Most welcome.