You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Can you please reserve me a flight ticket from DCA to PHX?

ASSISTANT: Sure, I will help you. Please help me with your name.

USER: Rebecca Johnson.

ASSISTANT: Please help me with your planned travelling dates.

USER: My trip dates are 01/10 - 01/12.

ASSISTANT: Do you need a break in your journey?

USER: I need a single connection.

ASSISTANT: Do you have any other preferences in your journey?

USER: I prefer an economy class.

ASSISTANT: To help you better, please let me know if you have any other needs in your journey.

USER: No, thank you for asking.

ASSISTANT: Rebecca Johnson, I am really sorry to inform you that there are no flights available for your journey.

USER: No issues, thank you.

ASSISTANT: Thank you for understanding. Thank you for reaching us. Have a good time!.