You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you help me in booking from BOS to DFW, as there is a business meeting to attend?

ASSISTANT: Sure, please provide me your travelling dates?

USER: My trip dates are May 7 to May 9.

ASSISTANT: Do you have any class preference?

USER: I am comfortable in any class.

ASSISTANT: Is there any connection limit?

USER: I am looking for a stop over flight.

ASSISTANT: Do you have any airline preference?

USER: I am comfortable with a normal-cost airline.

ASSISTANT: May I know your name?

USER: I am Lisa Edwards.

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

USER: No issue, thank you.

ASSISTANT: Thank you for reaching us.