You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Gary Hernandez.

ASSISTANT: How may I assist you?

USER: I am planning to visit Chicago to meet my friend, can you please book me a ticket from SFO to ORD?

ASSISTANT: Sure, we are happy to help you. Can you please let me know your travelling dates?

USER: I am planning to depart on Jan 26 and would like to return on Jan 28.

ASSISTANT: Do you prefer any halt in between journey?

USER: Yes, I prefer connecting flight on this route.

ASSISTANT: Thanks for providing details, sorry no flights are available on your journey routes.

USER: Ok, not an issue. I will find any alternate for this trip. Thank you for providing information.

ASSISTANT: Thank you for choosing us.