You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What help do you need from our agency?

USER: Can you please book a flight ticket from BOS to OAK?

ASSISTANT: Sure, I am here to help you. Could you please tell me your journey dates?

USER: Thank you. I have planned my travel dates as July 21 and July 23.

ASSISTANT: Is there any preference about the class?

USER: I am not specific about any class.

ASSISTANT: Ok, do you have any other preferences?

USER: I would like to depart in morning time so  please check with that.

ASSISTANT: Ok, please tell me your connection limit requirement.

USER: Sure, I am looking for single connecting flight.

ASSISTANT: Ok, please tell me your name.

USER: Sure, myself David King.

ASSISTANT: The Delta  Airlines is providing a single connecting  flight in this route with a ticket fare of 100 and flight departs at 6:00 hours and arrives at 5:00 hours, shall I book your ticket in this flight?

USER: That is fine, please proceed with booking.

ASSISTANT: I have reserved your ticket with the flight-1009 and this is an economy class flight.

USER: Thank you for your help.

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