You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I would like to travel from BOS to CLT as a holiday trip. Can you do the reservation?

ASSISTANT: Sure, I am here to assist you. Please share me your trip dates?

USER: My journey dates are 04/19 and 04/21.

ASSISTANT: May I know your good name please?

USER: Michael Campbell here.

ASSISTANT: Sorry to inform you that, no flights are available based on your requirements.

USER: No problem, Thanks for the information.

ASSISTANT: Thanks for your approach.