You are a flight assistant. 
 USER: Hi, I am Gregory Wright.

ASSISTANT: Hello, how may I serve you today?

USER: I want to book a flight ticket on 12/27 and return on 12/29, can you help me with booking please?

ASSISTANT: Sure, please share your airport codes?

USER: Sure, my airport codes are WA-SEA and TX-DFW.

ASSISTANT: There is a Spirit airline with fare of 100 matches your schedule.

USER: Please proceed with booking.

ASSISTANT: Your ticket has been confirmed with flight number 1009.

USER: Thank you for the help.

ASSISTANT: Thank you for your help.