You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Laura Smith. I am planning to visit Houston Zoo in HOU. Can you help me in booking a ticket from BOS?

ASSISTANT: May I know your travelling dates?

USER: My planning dates are from 05/19 to 05/21. I want a flight with 1 connection, so that I can meet my cousin.

ASSISTANT: Sorry, there is no flight available at your request.

USER: It's fine.

ASSISTANT: Thank you for reaching us.

USER: Thank you for helping me.

ASSISTANT: You are welcome. Have a safe journey.