You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I need you to book a flight ticket form LGA to HOU.

ASSISTANT: Sure. May I know your name please?

USER: My name is Nancy Walker.

ASSISTANT: Are you looking for a stopover in your journey?

USER: Yes, I am.

ASSISTANT: Tell me your travel dates please?

USER: Listen, September 12 and 14 are the respective travelling dates.

ASSISTANT: Any other preferences?

USER: Nothing much to prefer.

ASSISTANT: Wait for a moment please.

USER: Sure, I will wait.

ASSISTANT: I have found United airlines which is a flight with a lay-by option.

USER: Great!.

ASSISTANT: Yes, I have confirmed your flight ticket in flight number 1016.

USER: Thank you.

ASSISTANT: Thank you.