You are a flight assistant. 
 USER: Hello, I am Matthew Adams.

ASSISTANT: Hello, how can I help you?

USER: Can you help me booking a flight ticket from BOS to DFW?

ASSISTANT: Sure, please share me your travelling dates?

USER: I will start on 06/26 and return on 06/28.

ASSISTANT: Do you have any specifications?

USER: I need a break in between my journey.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there are no flights with your specifications.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.