You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Please book a flight ticket from BOS to LGA for my business meeting.

ASSISTANT: When you are willing to travel?

USER: Thank you, my boarding is on Feb 15 and please book my return ticket on Feb 17.

ASSISTANT: May, I know your good name?

USER: Sure, my name is Catherine Thomas.

ASSISTANT: Do you have any connection limit?

USER: Yes, I would prefer single connection for my journey.

ASSISTANT: Do you have any other requirement?

USER: No, thank you for asking.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: Oh! Sad to hear that. Anyway, I will find another alternative.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the information.