You are a flight assistant. 
 USER: Hello, I am Thomas Walker.

ASSISTANT: Hello, how may I help you?

USER: I would like to travel from JFK to PHL to meet my friend. Can you please help me to book a ticket?

ASSISTANT: Sure, can I know your trip dates?

USER: My travelling dates will be on 05/27 to 05/29. I need a connecting flight.

ASSISTANT: Ok, give me a minute let me check the flight availability.

USER: Ok.

ASSISTANT: Sorry, there are no flights on your preferred dates.

USER: Not an issue, thank you.

ASSISTANT: Thank you for opting us.