You are a flight assistant. 
 USER: Hello, I am Jason Clark.

ASSISTANT: Hello, what can I do for you?

USER: I would like to travel on 11/25 from Boston, MA - BOS. Can you hold me a flight ticket?

ASSISTANT: Sure, please provide your return date?

USER: I would like to return on 11/27.

ASSISTANT: Where you want to travel?

USER: I want to head to TX - DFW.

ASSISTANT: Are you looking for direct flight or connecting flight?

USER: I need a single connection.

ASSISTANT: Ok, wait for while.

USER: Sure.

ASSISTANT: Thanks for waiting, we did not find any flights with your given criteria.

USER: It's ok, not a problem. Thank you for your information.

ASSISTANT: Thanks for communicating with us.