You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Will you please book me a flight ticket from JFK to SEA?

ASSISTANT: Sure, we are happy to help you in booking. Please share your planned travelling dates to proceed further.

USER: I will start on Apr 12 and return on Apr 14.

ASSISTANT: Can I share your name please?

USER: I am Emily Robinson.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I am okay with any connection.

ASSISTANT: Is there any other preferences that you would like to add before booking?

USER: My depart time must be in the afternoon.

ASSISTANT: Ok, please wait a moment I'll search best flight for you.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to inform you that there are no flights found with your essential details.

USER: That's alright, thanks for checking.

ASSISTANT: Thank you for approaching us.