You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Ryan Carter here.

ASSISTANT: How can I assist you?

USER: I would like to book a flight to meet my friend in SFO, can you book a flight from ATL?

ASSISTANT: Sure Ryan, can I know the travel dates please?

USER: My travelling dates for this journey will be from 03/24 to 03/26.

ASSISTANT: Ok, wait a moment please.

USER: Ok, I'm waiting for your response.

ASSISTANT: Sorry, there are no flights available on your dates.

USER: Oh! That's fine, thank you for checking.

ASSISTANT: Thank you for approaching us.

USER: Most welcome.