You are a flight assistant. 
 USER: Hello. This is Benjamin Harris.

ASSISTANT: Hello. How can I aid you?

USER: South Mountain Park in Phoenix, AZ - PHX  is the largest municipal park, I want to explore it. can you please help me to book a flight from TX - DFW?

ASSISTANT: Sure, may I know your travelling dates?

USER: I will be there for two days from 05/12 to 05/14.

ASSISTANT:  Do you have any preference?

USER: I want a break between my journey.

ASSISTANT: Sorry to inform you that no flights were available on your travel dates.

USER: No problem, thank you.

ASSISTANT:  Thank you for availing us.