You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I would like to make a flight ticket reservation from BOS to SEA, can you please help me?

ASSISTANT: Sure, I am here to help you. Tell me your travel dates.

USER: Sure, my planned travelling dates are Jun, 15 and 17 respectively.

ASSISTANT: Ok, please tell me your preferences.

USER: Yes, I would like to travel in business class flight.

ASSISTANT: Ok, please tell me your full name.

USER: Sure, my name is Andrew Lopez.

ASSISTANT: Ok, please tell me your other specifications.

USER: Yes, flight has to be with single connection.

ASSISTANT: Sorry to inform you, there are no flights found with your travel details.

USER: Ok, not an issue.Thank you for your information.

ASSISTANT: You are welcome. Thank you for choosing us.