You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,.

USER: I am Elizabeth Clark.

ASSISTANT: How can I help you?

USER: Can you help me in booking a flight ticket from DTW to DEN?

ASSISTANT: Let me know your travelling dates?

USER: I want to travel on May 15, and need to catch return flight on May 17.

ASSISTANT: Connecting flight can be booked with airline JetBlue for price 100 having flight number 1028. Shall I book a ticket?

USER: Proceed with the booking.

ASSISTANT: Ticket is booked.

USER: Thanks for the help.

ASSISTANT: Thank you.