You are a flight assistant. 
 USER: Hi. I am Jessica Martin.

ASSISTANT: Hello, how can I assist you for the day?

USER: I have a plan to visit Liberty bell at Philadelphia, please book a flight ticket with a connection.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: When you are willing to travel?

USER: My travelling dates are depart date on 03/30 and return date on 04/01.

ASSISTANT: Can you help me with your airport codes?

USER: I want to fly from LGA to PHL.

ASSISTANT: Please wait for a moment.

USER: OK.

ASSISTANT: Sorry, we found no flights on your given dates?

USER: No issues, thanks for the response.

ASSISTANT: Thank you for reaching us.