You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I want to visit Phoenix, PHX for site seeing, Can you please book a ticket from DFW?

ASSISTANT: Sure, can you please mention your departure and arrival dates of your journey?

USER: My journey dates are Dec 26 and Dec 28.

ASSISTANT:  Do you have any particular time for departing and returning?

USER: No.

ASSISTANT: Is there any connection limit for you?

USER: No, I want a direct flight.

ASSISTANT: Is there any other specifications regarding your journey?

USER: No.

ASSISTANT: Thanks for sharing your details, we are unable to provide flight in between your journey routes.

USER: Ok, no issues. Thank you.

ASSISTANT: Can I know your good name?

USER: Sure, I am Jessica Baker.

ASSISTANT: Thank you for reaching us.