You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER:  My name is Kenneth Hernandez. I would like to book a ticket from IAH to DFW, to attend a conference.

ASSISTANT: Please share your trip dates.

USER: My itinerary travel dates are June 28 and June 30.

ASSISTANT: May I know your specifications?

USER: Yes,  I would like to board on single connection flight where, depart time should be in the afternoon.

ASSISTANT: Please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry Kenneth Hernandez, no airlines is providing service in the afternoon.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.