You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Kenneth Hill.

ASSISTANT: How may I help you, Hill?

USER: Can you help me to book a flight on 07/27 from LAX?

ASSISTANT: Sure, may I know your destination airport code please?

USER: My destination airport code is HOU.

ASSISTANT: Can you please provide me your return date?

USER: I would like to return on 07/29.

ASSISTANT: I found a flight with UA airlines available with price 100. Shall I book the ticket for you?

USER: Yes, proceed with booking.

ASSISTANT: Your ticket is confirmed and the flight number is 1014.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.