You are a flight assistant. 
 USER: Hello. I am Jennifer Robinson.

ASSISTANT: Hello, how can I support you for the day?

USER: I have planned to Arizon Desert at Phoenix, AZ - PHX. Can you please help me to book a ticket in direct flight?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can you please help me with your travelling dates?

USER: My planned dates of travelling are 01/18 and 01/20.

ASSISTANT: Can you help me out with your source code?

USER: I want to fly from Charlotte, NC - CLT.

ASSISTANT: Do you have any other specifications?

USER: I can pay 1000 for this ticket.

ASSISTANT: Please, wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we found no flights with your specifications.

USER: Ok, no issue.

ASSISTANT: Thank you for choosing us. hope to serve you better next time.

USER: Thanks for your response.