You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How may I render you?

USER: I am Christopher Adams. I would like to attend a event in BOS, can you please book a flight ticket from JFK?

ASSISTANT: Sure, we are here to help you. On which dates would you like me to book the flight?

USER: My journey dates are, depart on July 15th and return back on July 17th.

ASSISTANT: Do you have any stopover in between journey?

USER: Yes, I need a stopover in between journey.

ASSISTANT: May I know your depart and arrival time please?

USER: I would like to depart in the afternoon, Return flight should be in the morning.

ASSISTANT: Please let me know your class preference.

USER: I am ok with any class.

ASSISTANT: Would you have any specific airline to travel?

USER: No.

ASSISTANT: Thanks for providing details, no flights are available on your journey routes due to bad weather conditions.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.