You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I respond to your request?

USER:  I am looking for a flight from DFW to LGA, can you please help me in 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: My travelling dates are Oct 27 and Oct 29.

ASSISTANT: Do you need any flag stop in between journey?

USER: I need a connecting flight.

ASSISTANT: May I know your good name please?

USER: My name is Sandra Turner.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I want to return in evening.

ASSISTANT: Ok, please wait a moment. let me search a flight for you.

USER: Sure, I will wait for your information.

ASSISTANT: Thanks for waiting, there are no flights available at this moment matching your particulars.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you.