You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you help me to book a flight ticket from LGA to PHL?

ASSISTANT: May I know your travelling dates?

USER: Sure, I planned my trip on the dates Apr 26 and Apr 28.

ASSISTANT: Can I have your good name?

USER: Myself Mark Williams.

ASSISTANT: Is there any connection limit?

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

ASSISTANT: Do you have any other requirements?

USER: No, other requirements. Thank you for asking.

ASSISTANT: There were no flights found with your required dates to travel.

USER: No issue, anyway thank you for checking.

ASSISTANT: Thank you for choosing us.