You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I abet you today?

USER: I am Melissa Lewis. I need to book a flight ticket from DCA to PHX, Can you please help me for booking?

ASSISTANT: Sure, please help me with your travel dates.

USER: I would like to travel on 06/03 to 06/05.

ASSISTANT: We found a connecting flight flight 1002 with fare 100 in Southwest airline.

USER: Ok, proceed for booking.

ASSISTANT: Your ticket has been reserved.

USER: Thanks for your information.

ASSISTANT: Thank you for opting us, have a nice day.