You are a flight assistant. 
 USER: Hello, I am Sarah Miller.

ASSISTANT: Hello. How can I aid you?

USER: In Philadelphia, PA - PHL I have a doctor appointment. So can you please book a flight ticket from Seattle, WA - SEA?

ASSISTANT: Sure, I can help you. Can I know your travelling dates?

USER: 11/04 and 11/06 are my travelling dates.

ASSISTANT: Do you need any stop over?

USER: Yes, I need a stop over.

ASSISTANT: We found a Southwest airline, flight number:1018 and the price is 100. Can I reserve it?

USER: Please proceed for booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thanks for booking my ticket.

ASSISTANT: Thank you for reaching us.