You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Emma Campbell.

ASSISTANT: How can I serve you?

USER: Please book me a flight ticket from Houston to Washington.

ASSISTANT: Sure, let me know your planned travel dates?

USER: 09/16 and 09/18 are my travelling dates.

ASSISTANT: How much you can afford for a flight ticket?

USER: I can afford 5000 for my ticket.

ASSISTANT: Kindly assign your airport abbreviates?

USER: Sure, HOU is my origin and DCA is my destination.

ASSISTANT: Please wait for a moment, I will let you know the flight details.

USER: Sure.

ASSISTANT: Thanks for being patience, there is a flight from an AA airline with flight number 1010 having a single connection. Shall I proceed to book?

USER: Please proceed for booking.

ASSISTANT: Your flight ticket is confirmed.

USER: Thanks for booking my ticket.

ASSISTANT: Thanks for choosing us, have a great day.