You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Ronald Baker here. I am a model, I have my photo shoot at San Francisco. Could you book my ticket from Charlotte?

ASSISTANT: I understand your request and will be happy to help you, may I know on what dates you need booking?

USER: My itinerary dates are 09/24 and 09/26.

ASSISTANT: Ok, could you please tell us your location airport codes?

USER: My genesis and terminus airport codes are CLT and SFO.

ASSISTANT: The Spirit airline with flight number 1003 is available having fare as 300 and connection as 1.

USER: I can afford 200 for my ticket.

ASSISTANT: Sorry, there is no flight with your requested fare.

USER: It's ok, thank you for the help.

ASSISTANT: Thank you for consulting us. If any questions arise, please feel free to contact us at any time.