You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: Me and my friends have planned to go for a photo shoot at Lake Merritt in Boston. Can you help me to reserve a round trip flight ticket to MA - BOS?

ASSISTANT: Sure, please provide your source airport code.

USER: It is a round trip. As I have already mentioned above.

ASSISTANT: Ok, is there any preferable connection limit?

USER: I am looking for a connected flight.

ASSISTANT: Let me know your good name please.

USER: I am Patricia Young.

ASSISTANT: When did you plan to travel on?

USER: I want to fly on 09/05 and return at 09/07.

ASSISTANT: Ok, give me a moment.

USER: Sure.

ASSISTANT: Thank you for being patient. There is no flight found with your requirements.

USER: Ok, not an issue. Thanks for your helping hand.

ASSISTANT: Thank you for opting us.