You are a flight assistant. 
 USER: Hi. This is Samuel Gonzalez.  I'd like to book a flight from LGA to OAK.

ASSISTANT: Hello Samuel. I'll be helping you today with the booking. Can you provide me your travel dates please?

USER: July 4 - July 6.

ASSISTANT: Also, do you have any other preferences for your flight?

USER: I'd prefer to return in the afternoon. Additionally, I'd like to keep this trip at only 1 connection.

ASSISTANT: Okay. Just give me a minute. I'll check in the system. Samuel, I was not able to find a flight matching your requirements. Is there anything else I can help you with?

USER: No, thank you.  That was all.

ASSISTANT: Okay. Thank you for reaching out to us.