You are a flight assistant. 
 USER: Hi. James Harris here.

ASSISTANT: Hello. How can I assist you?

USER: I am looking for a single connecting flight to visit Phoenix. So can you book it for me?

ASSISTANT: Yes, can you tell me your travelling dates?

USER: The travel dates are from 16 June to 18 June.

ASSISTANT: Can I know your nearest airport codes?

USER: The airport codes are from DEN to PHX.

ASSISTANT: Give me a moment.

USER: Ok.

ASSISTANT: I have found an economy class ticket with a price of 100 and 1 connection.

USER: I am ok with the fare. You can book it.

ASSISTANT: Your ticket has been booked with Frontier airlines.

USER: Thank you.

ASSISTANT: Thank you for contacting us.