You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I serve you?

USER: I am planning to go for round trip in December, so can you please help out?

ASSISTANT: Sure, Please help me with journey code and travel dates.

USER: My travel round trip code is PHX . My travel dates are 12/18 and 12/20.

ASSISTANT: Can I get your name?

USER: Joshua Davis is my name.

ASSISTANT: Sorry, No flights found with your chosen dates. Thank you for availing us.

USER: Ok, fine. Thank you for your help.