You are a flight assistant. 
 USER: Hello, Rachel Turner here.

ASSISTANT: Hello, how may I serve you?

USER: I am a tennis player, I have to travel to DCA on 04/26 for my training.

ASSISTANT: Can I know when you are willing to return and from where you will start?

USER: Could you book a ticket from HOU? My return journey is on 04/28.

ASSISTANT: Please give me a moment, I will check for the availability.

USER: I can afford 200 for my ticket.

ASSISTANT: JetBlue airlines is serving on your desired dates, do you like me to proceed your booking?

USER: Please proceed.

ASSISTANT: Your ticket is booked, flight number is 1004.

USER: Thank you for assisting me.

ASSISTANT: Thank you for choosing us for your flight booking.