You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: My plan to visit San Francisco on a vacation at Pier 39 with my family, please help to find a flight under price of 5000.

ASSISTANT: Sure. your good name please?

USER: My name is Mary Parker.

ASSISTANT: Can you please provide your journey dates?

USER: I will travel on 10/30 and return on 11/01.

ASSISTANT: Ok, please share your journey point to process your booking.

USER: My source is CA-LAX and destination is CA-SFO.

ASSISTANT: Thanks for sharing your details, give me a minute.

USER: Sure.

ASSISTANT: Sorry, there was no flight available that matches your information.

USER: Thank you for the information.

ASSISTANT: Thanks for choosing us.