You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Helen Allen. Please book me a ticket from DTW to DFW to meet my family.

ASSISTANT: Let me know your travelling dates?

USER: I have planned to travel on Feb 12th and and return on Feb 14th.

ASSISTANT: Do you have any preference?

USER: I would like to return at morning time.

ASSISTANT: Connecting flight can be booked with airline JetBlue for price 100 having flight number 1012.

USER: Ok, please book this ticket.

ASSISTANT: Ticket is booked.

USER: Thank you.

ASSISTANT: Thank you.