You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Jerry Williams here. I want to participate in Boston marathon, could you book my ticket from HOU to BOS?

ASSISTANT: When you are willing to travel?

USER: My itinerary dates are July 25 and July 27.

ASSISTANT: Do you have any class preference?

USER: No, I want to depart in the afternoon.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT:  We found 1014 UA airlines with single connection with economy class and depart time is 13:00 PM. Shall I proceed with the booking?

USER: Please book my ticket.

ASSISTANT: Your, booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.