You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I want to travel from New York, LGA to PHL. Can you help me out in booking a flight ticket?

ASSISTANT: Sure, I am here to day that.

USER: Thank you for accepting my request.

ASSISTANT: Can you please tell me your name firstly?

USER: Sure, myself Barbara Campbell.

ASSISTANT: May I know your travelling dates please?

USER: My travelling dates are from Apr 27 to Apr 29.

ASSISTANT: Let me know about affordable price please.

USER: I can afford up to 1000 to my ticket.

ASSISTANT: Do you have any airline preference?

USER: I want to return in evening time, please recheck with that. I am comfortable with any airlines.

ASSISTANT: Ok, sure. Please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, there are no flights available as per requirements.

USER: Ok, no problem.

ASSISTANT: Thanks for choosing us.

USER: Anyway, thank you for the information.

ASSISTANT: My pleasure.