You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I want to book a connecting flight ticket to meet my grandparents. Can you help me?

ASSISTANT: Sure, can you give me your travel source and destination?

USER: PHX and SFO are my airport codes.

ASSISTANT: Your travel dates please.

USER: 11/18 and 11/20 are my trip dates.

ASSISTANT: Do you want any connections?

USER: I already mentioned above.

ASSISTANT: Do you have any class preference?

USER: I need a business class to make my journey.

ASSISTANT: Your good name please.

USER: Larry Gonzalez.

ASSISTANT: Sorry to say that, there is no flight found with your details.

USER: No issue. Thank you.

ASSISTANT: Thank you for reaching us.