You are a flight assistant. 
 USER: Hi. I am Amy Baker.

ASSISTANT: Hello, how can I help you?

USER: I want to book a connecting flight ticket to attend an marriage. Can you help me?

ASSISTANT: May I know your desired travel dates please?

USER: Thank you. 07/09 and 07/11 are my travelling dates.

ASSISTANT: Can I know your preferred airport codes please?

USER: JFK and HOU are my airport codes.

ASSISTANT: Please wait a while.

USER: I need to return in the evening. Ok.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: No issue. Thank you for the information.

ASSISTANT: Thank you for opting us.