You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Helen Rodriguez here.

ASSISTANT: Helen, may I know what kind of assistance you are looking for?

USER: As I'm a model, I need to attend a beauty contest which is going to be held at Los Angeles. Can you please help in booking a ticket for me?

ASSISTANT: Sure, I am glad to help you. May I know your origin and destination airport codes?

USER: Sure, my boarding point is LGA and I want to land at LAX.

ASSISTANT: Please share your itinerary dates.

USER: Well, the program date is fixed on 05/18. So I have to leave here on 05/17 and I want to fly-back on 05/19.

ASSISTANT: Please give me a moment, let me check for any available flight.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry Rodriguez, no flight is available on your preferred dates.

USER: Oh! Will you please recheck it once? because it's very important for me to go there.

ASSISTANT: I have rechecked and sorry to say we could not find any flight.

USER: That's ok, I'll find any other means of transport to reach my destination. Thank you so much for your great service anyways.

ASSISTANT: Thank you for approaching us, have a nice day.