You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Shirley Garcia here. I want to book a flight ticket on the route from BOS to ATL. Can you help me?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My journey dates will be from Nov 23rd to Nov 25th.

ASSISTANT: I found an economy class ticket in Southwest airlines with low cost of 100 and it is a single connecting flight. Can I book your ticket?

USER: I would like to return in the morning. Can you please check it?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, there is no flight available for your request.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.