You are a flight assistant. 
 USER: Hi, my name is George Taylor.

ASSISTANT: Hello, How may I be your helping hand today?

USER: I would like to go to Washington to visit White House, can you book a flight ticket with fare 500 ?

ASSISTANT: Sure, can you please provide your travelling airport codes?

USER: Sure I want to fly from ATL to DCA.

ASSISTANT: Ok, specify your travelling dates please?

USER: And my journey dates are 07/15 and 07/17.

ASSISTANT: Is there any connection limit in between your journey?

USER: Yes, I need a single connection.

ASSISTANT: Sorry to say that, there is no flight found within your needs.

USER: Ok, no issues.

ASSISTANT: Thank you for your interest on us.

USER: Thanks for your assistance.

ASSISTANT: Have a pleasant day.