You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I need to book my ticket from BOS to SEA. Can you please help me with booking a flight ticket?

ASSISTANT: Sure, May I know the travelling dates?

USER: My planned travel dates are from Apr 04 to Apr 06.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight in my journey.

ASSISTANT: Is there any other requirements?

USER: No, I din't have any other requirements.

ASSISTANT: May I know your name?

USER: Sure, my name is John Hall.

ASSISTANT: Please wait a minute.

USER: Sure, I will wait for your response.

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

USER: Not an issue with this one, anyway thank you for the information.

ASSISTANT: Thank you for opting us.