You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Helen Gonzalez here. Reserve a flight ticket for me that is from HOU to BOS. For my business trip.

ASSISTANT: Sure, may I know your respective dates of journey please?

USER: My price limit is less than 500. My travelling dates for journey are 02/10 to 02/12.

ASSISTANT: Ok, wait for a moment please.

USER: Sure.

ASSISTANT: There is a direct flight of fare 100 and the airline is naming as Southwest, are you ok with this booking?

USER: You can book it.

ASSISTANT: Ok, your booking is done with the flight number 1004.

USER: Thank you.

ASSISTANT: You are welcome, have a nice day.