You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Melissa Garcia here.

ASSISTANT: How can I help you?

USER: I want to attend a Marriage in Boston. Can you please help me for booking the flight ticket?

ASSISTANT: Let me know your travelling dates.

USER: My travelling dates are 07/22 and 07/24.

ASSISTANT: Can I know your airport codes?

USER: My airport codes are DEN and BOS.

ASSISTANT: Do you have any preferences?

USER: I would prefer single halt.

ASSISTANT: Found ticket with airline Southwest for price 100 having flight number 1000.

USER: Please proceed for booking the flight ticket.

ASSISTANT: Ticket is booked.

USER: Thanks for helping me.

ASSISTANT: Thank you.