You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I am planning to book a ticket from DFW to LGA. Can you please help me out to book a ticket for me?

ASSISTANT: Sure, May I know the journey dates?

USER: I would like to travel on Jan 31 and return back on Feb 02.

ASSISTANT: Do you have any connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: My name is Joshua Harris.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for availing us.