You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Jonathan Wilson, want to travel from DEN to PHX. Please help me in booking my ticket.

ASSISTANT: Can I know your travel dates?

USER: Sure, my travelling dates are from 07/26 to 07/28.

ASSISTANT: Please give me a minute, I will be back with the flight details.

USER: Sure.

ASSISTANT: The flight 1011 of UA airlines is available on your requested dates with a price of 100. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket is booked successfully.

USER: Ok, thank you for your help.

ASSISTANT: You are welcome.