You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you?

USER: My name is Karen Lewis. I want to travel from TX-IAH to WA-SEA for a business trip.

ASSISTANT: Ok. May I know your travelling dates?

USER: My departure date is 03/02 and return date is 03/04. Make sure my price limit is 500.

ASSISTANT: Sure.

USER: My connections limit is 1.

ASSISTANT: There is a flight 1027 of Delta airlines, shall I book this flight?

USER: Please proceed for booking.

ASSISTANT: Your ticket is booked, have a happy journey.

USER: Thank you for helping me.

ASSISTANT: Most welcome.