You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Please book me a flight ticket from DEn to IAH to meet my family.

ASSISTANT: Sure, may I know your trip dates?

USER: I have planned to travel on May 18th and return on May 20th.

ASSISTANT: Do you need any break in your journey?

USER: I prefer connecting flight.

ASSISTANT: Is there any class preference for you?

USER: I am ok with any class.

ASSISTANT: Do you have any other requirements?

USER: No, thank's.

ASSISTANT: May I know your good name please?

USER: Paul Brown.

ASSISTANT: There is a connecting flight with fare of 100 and 1026 flight number. Shall I proceed?

USER: Ok, please book this ticket.

ASSISTANT: Your seat has been reserved with Delta Airlines in economy class.

USER: Thank you.

ASSISTANT: Thank you for choosing us.