You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Please reserve me a flight ticket to Boston, BOS to attend a technical seminar in my college.

ASSISTANT: Sure, may I know your source airport?

USER: Dallas & Fort Worth, DFW is my source location.

ASSISTANT: Please share your planned journey dates.

USER: My journey dates are 02/05 to 02/07.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: It's ok, thank you.

ASSISTANT: May I know your name?

USER: I am Joshua Allen.

ASSISTANT: Thank you.

USER: Thank you for your response.