You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Please book me a flight ticket from BOS to SFO to meet my family.

ASSISTANT: Sure, we are here to help you. Can you share me your travelling dates?

USER: I have planned to travel on Oct 24th and return on Oct 26th.

ASSISTANT: May I know your name further process?

USER: Justin Walker.

ASSISTANT: Do you have any other specifications?

USER: I prefer connecting flight.

ASSISTANT: Ok, wait for some time I will check the availability of flights on your details and get back to you.

USER: Ok.

ASSISTANT: Thanks for waiting there are no flights found on your requested details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks for contacting us.