You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Melissa Green here.

ASSISTANT: How can I help you?

USER: I want to visit Las Vegas to meet my childhood friend, can you please help me in booking?

ASSISTANT: Sure, I will help you. Can you please provide me your travelling dates?

USER: My travelling dates are from 05/28 till 05/30.

ASSISTANT: Ok, may I know your airport codes?

USER: I want to fly from SEA to LAS.

ASSISTANT: There is one flight is available for you with single connection. Shall I proceed for booking?

USER: Please proceed.

ASSISTANT: Your ticket is booked with flight number 1007 and airline is Spirit.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.