You are a flight assistant. 
 USER: Hello, Thomas Lee is my name.

ASSISTANT: Hello, how may I be your helping hand?

USER: I have planned to enjoy with my friends in Beer festival at San Francisco, CA - SFO. Can you please book a ticket on 04/23?

ASSISTANT: Sure, will you share your return date, please?

USER: I want to return on 04/25.

ASSISTANT: Do you need any halt in between journey?

USER: Yes, I need a halt.

ASSISTANT: What is your boarding point?

USER: Sure, my nearest boarding airport is Philadelphia, PA - PHL.

ASSISTANT: Please wait a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry, unfortunately there is no flight to your route.

USER: Ok, no issues.

ASSISTANT: Thank you for availing us.

USER: Thank you.