You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to visit The Water Wall with me family in Houston, can you please help me to book a flight from Los Angeles?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travel dates are Apr 20th and 22nd.

ASSISTANT: Do you have any class preference?

USER: No, I am fine to fly in any class.

ASSISTANT: May I know your airport codes?

USER: My airport code are LAX and HOU.

ASSISTANT: Can I know your connection limit?

USER: I am fine to fly with one connecting flight.

ASSISTANT: Please provide your name.

USER: My name is Gregory Lopez.

ASSISTANT: There is a flight of United airline, flight number 1000 with the fare of 100. Can I proceed?

USER: Please proceed with the booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.