You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am planning for the trip, can you please book a flight ticket for me with name Deborah Baker?

ASSISTANT: Sure, can I know the details of travel?

USER: I want to travel from Boston, BOS to Minneapolis & St. Paul, MSP.

ASSISTANT: Can I know the dates of travel?

USER: My travelling dates are 08/27 and 08/29.

ASSISTANT: I'm sorry to inform you that there are no flights matching with your preferences.

USER: It's ok, I will travel by my own.

ASSISTANT: Thank you, have a good day.

USER: Thank you for spending the time in searching a flights.