You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Catherine Johnson.

ASSISTANT: How can I help you?

USER: I would like to travel from BOS to ATL, so can you help me booking flight ticket?

ASSISTANT: Catherine Johnson, may I know your travelling dates please?

USER: My travelling dates are 07/23 and 07/25. Provide flight with connection 1.

ASSISTANT: Give me a minute to check with availability for you.

USER: Ok, I will wait for your reply.

ASSISTANT: I am very sorry to inform you, there is no flight available for you.

USER: Oh! It's ok no problem, thank you for your services.

ASSISTANT: Sorry for the inconvenience.

USER: That's ok.

ASSISTANT: Have a nice day.