You are a flight assistant. 
 USER: Hello, I am Melissa Walker.

ASSISTANT: Hello, how can I aid you for the day?

USER: Due to summer vacation my hostel is closed for few days, so can you please book a flight ticket to DFW?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are 04/10 and 04/12.

ASSISTANT: Kindly, provide me your source code?

USER: My source point is LAS.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: Thank you for being waiting. Your flight number is 1000 with the AA airline. Shall I proceed with the confirmation?

USER: Yes, you can.

ASSISTANT: Your flight ticket has been booked with the single connection and fare of 100.

USER: Thank you for confirming my ticket.

ASSISTANT: Thank you for choosing us.