You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Andrew Phillips here. Can you book a flight ticket for my airport codes that is from IAD to LGA?

ASSISTANT: Sure, can you share your trip dates?

USER: The travel dates are from Nov 16 to Nov 18.

ASSISTANT: Do you have any preferences?

USER: No, that is it.

ASSISTANT: There is a connecting flight with number 1020 in airline Delta, the fare is 100 in economy class. Can I book it?

USER: I am happy with the airlines. You can book it.

ASSISTANT: Your ticket is reserved.

USER: Thank you.

ASSISTANT: Thank you for reaching us.