You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I serve you?

USER: I need to book a flight ticket from SEA to PHL to enjoy religious festivals.

ASSISTANT: Sure, may I know your name please?

USER: Sure, Gregory Nelson here.

ASSISTANT: When are you planning your trip?

USER: Sure, my travelling dates are May 18 and May 20.

ASSISTANT: May I know your connection limit?

USER: I need a connected flight.

ASSISTANT: Do you prefer either economy or business class?

USER: I am comfortable with any class.

ASSISTANT: Do you have any other preference?

USER: No.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: We have a flight from United airlines, number 1020 and the price is 100. Shall I proceed with the booking?

USER: Yes, you can.

ASSISTANT: Your economy class seat is confirmed.

USER: Thank you for your assistance.

ASSISTANT: Thank you for opting us.