You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you?

USER:  I have a program to attend, so could you help me to book a ticket from HOU to DCA.

ASSISTANT: Sure, may I know your name?

USER: I am Timothy Mitchell.

ASSISTANT: When are you planning to make your trip?

USER: My trip dates are Jun 28 to Jun 30.

ASSISTANT: How many connections do you need?

USER: I need a connecting flight.

ASSISTANT: Is there any class preference?

USER: I prefer a business class.

ASSISTANT: Do you need any specifications?

USER: No.

ASSISTANT: Thanks for providing your details, currently there are no flights going on your way.

USER: No issue, thank you.

ASSISTANT: Thank you for reaching us.