You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I would like to meet my grand parents at Detroit, please help me in booking a ticket from PHL to DTW.

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: My planned travel dates are on Mar 10 and Mar 12.

ASSISTANT: May I know your connection limit?

USER: I need a flight with single connection.

ASSISTANT: Do you have any airline preference?

USER: I prefer a normal-cost airline for my trip.

ASSISTANT: Do you have any specifications?

USER: No, thank you for asking.

ASSISTANT: Can you please tell me your name?

USER: My name is Elizabeth Johnson.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for reaching us, have a great day.