You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: James Philips here. I would like to meet my grandparents in Atlanta, can you please help me out with booking of a flight ticket?

ASSISTANT: Please share desired travel dates?

USER: I would like to move on 07/14 and please book my return ticket on 07/16.

ASSISTANT: May I know your preferred airport codes?

USER: I want to travel from SFO to ATL.

ASSISTANT: There is no flight available on your desired travel dates.

USER: Oh! So sad to hear. Anyway, thank you for the information.

ASSISTANT: Thank you for reaching us.