You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve today?

USER: I am planning to visit the Independence National Historical Park at Philadelphia, so can you please book a ticket from SEA?

ASSISTANT: Can you share me your destination airport code?

USER: Destination airport code is PHL.

ASSISTANT: Can you help me with your name?

USER: My name is Charles Scott.

ASSISTANT: May I know your travelling dates?

USER: My travelling dates are May 14 and May 16.

ASSISTANT: Is there any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I want to return in the evening.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Frontier Airlines providing a connecting flight in economy class with fare 100, can I proceed for booking?

USER: If the flight return in the evening, please proceed.

ASSISTANT: Your ticket is confirmed with flight number 1010 which returns at 20:00 hours.

USER: Thank you.

ASSISTANT: Thank you for choosing us.