You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: My name is Michael Lopez, I want to book a flight from DCA to DFW to attend a meeting. Can you help me with booking?

ASSISTANT: Sure, tell me your travel dates please?

USER: I will fly on May 15 and return on May 17.

ASSISTANT: Wait for a moment please.

USER: Sure.

ASSISTANT: Thanks for your patience. I have found Delta airlines which flies with one connection.

USER: Please proceed with booking.

ASSISTANT: Yes, I have confirmed your flight ticket with flight number 1020.

USER: Thank you for helping me.

ASSISTANT: Thank you.