You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Can you give me your  trip dates?

USER: I have planned to travel on Feb 14th and return on Feb 16th.

ASSISTANT: Do you need any connections?

USER: I prefer connecting flight.

ASSISTANT: Are there any other preferences?

USER: I would like to depart at afternoon time.

ASSISTANT: May I know your name?

USER: Myself Kevin Lee.

ASSISTANT: Connecting flight number 1013 with price 200 in economy class is available. Is it ok for you?

USER: Ok, please book this ticket.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.