You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Can you please book a flight ticket on dates Apr 26 and Apr 28?

ASSISTANT: Yes, can you tell me your nearest airport codes?

USER: My airport codes are DEN and PHX.

ASSISTANT: Do you have any other specifications?

USER:     I need a connecting flight.

ASSISTANT: Give me a moment.

USER: Ok.

ASSISTANT: I have found an economy class ticket with a price of 200 and 1 connecting flight.

USER: Please book a flight ticket for me.

ASSISTANT: Can I know your name for booking?

USER: My name is Susan King.

ASSISTANT: Your ticket is booked.

USER:      Thank you for the help.

ASSISTANT: Thank you for reaching us.