You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am looking for a flight which return to my location in the afternoon. Can you guide me in booking a flight ticket from New York, LGA?

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable dates of travelling?

USER: Thank you for your positive response, my preferable dates of journey are Dec 10 and Dec 12.

ASSISTANT: Are you ok with connecting flight?

USER: Yes, I am looking for such a flight.

ASSISTANT: May I know your destination airport code for booking?

USER: Sure, my destination airport code is DEN.

ASSISTANT: Any more specifications do you have?

USER: No.

ASSISTANT: Please wait a moment to check the flights.

USER: Sure, I'll wait for your response.

ASSISTANT: Unfortunately there are no flights running on your route with your required preferences.

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

ASSISTANT: Can I know your name for documentation purpose?

USER: Yes, I am Margaret Scott.

ASSISTANT: Thank you for reaching us Margaret Scott.

USER: You are welcome.