You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I need to attend my cousin's wedding, can you book a ticket from LAX to SFO?

ASSISTANT: Sure, may I assist your travel dates?

USER: Sure, my planned departure and return travel dates are 30th June and 2nd July.

ASSISTANT: Do you have any specifications?

USER: I prefer normal-cost airlines to travel.

ASSISTANT: Please share me your name.

USER: Anna Allen is my name.

ASSISTANT: Sorry, there is no flight at this moment.

USER: That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you.