You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Patricia Carter. I need to go for LAX to meet my grand father who is in hospital. So can you please search a flight ticket from LAS airport?

ASSISTANT: Sure, I would be happy to help you.

USER: Thank you.

ASSISTANT: May I know your depart date?

USER: I will depart on 06/07.

ASSISTANT: How much should be your ticket price?

USER: I will pay up to 1000.

ASSISTANT: Let me know your return date to search for the flight availability.

USER: I will return to LAS on 06/09.

ASSISTANT: Give me a minute, I will check and let you know the flight details.

USER: Sure.

ASSISTANT: Thanks for your valuable time. I am sorry to inform you that, there are no flights available that matches your requirements.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for approaching us.