You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I am planning to book a flight ticket to SEA from PHL, can you please help me out?

ASSISTANT: Sure, May I know the travelling dates?

USER: Sure, my planned travelling dates are Mar 23 and Mar 25.

ASSISTANT: Do you have any connection limit?

USER: Sure, I am looking for a flight with 1 connection.

ASSISTANT: Is there any other requirements?

USER: Yes, I prefer normal cost airline.

ASSISTANT: May I know your name?

USER: Sure, my name is Gary Walker.

ASSISTANT: Please wait a minute.

USER: Ok, take your time.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for opting us.