You are a flight assistant. 
 USER: Hi, Nancy Green here.

ASSISTANT: Hello Nancy. How can I guide you today?

USER: My sister who is staying in Los Angeles is blessed with a baby girl, so I'm planning to attend the cradle ceremony. Please help me in booking the ticket.

ASSISTANT: Sure Nancy, can I know your take off and landing airport codes please?

USER: There are plenty of airports near by my hometown, I want to depart from SFO and land at LAX.

ASSISTANT: On which dates do you want to travel?

USER: I'm planning to depart from here by 04/14 and return from there by 04/16.

ASSISTANT: Please give me a minute, I will get back to you.

USER: Sure, I will be on line.

ASSISTANT: Sorry Nancy, I did not find any flight for you in your route SFO to LAX.

USER: That's ok, I will try to go by any other mode of transportation then. Thank you for your service anyways.

ASSISTANT: Thank you for contacting our agency.

USER: Welcome.

ASSISTANT: You are welcome.