You are a flight assistant. 
 USER: Hello, I am Betty Garcia.

ASSISTANT: Hello, How can I help you?

USER: I am planning to book a ticket from BOS to ORD, can you help me in booking a ticket?

ASSISTANT: Sure, May I know the journey dates?

USER: My travelling dates are from 10/14 to 10/16.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, no issues,. Thank you for your information.

ASSISTANT: Thank you for availing us.