You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Susan Adams.

ASSISTANT: How may I assist you today?

USER: I planned to attend for a wedding in DFW, can you please help me to book a flight ticket from PHL?

ASSISTANT: Please provide your travel dates to search available flight for you.

USER: I planned to travel on 12/21 and 12/23.

ASSISTANT: There is a flight with airline Spirit and price is 100.

USER: Ok, please confirm my booking.

ASSISTANT: Your ticket has been booked with flight number 1001.

USER: Thank you for your assistance.

ASSISTANT: It's my pleasure.