You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I want to change my current reservation. Can you help me for this one?

ASSISTANT: Sure, I am here to help you with that. Can you please tell me your name?

USER: Sure, George Lee here.

ASSISTANT: Happy to inform you that, I found your reservation. Can you please tell me your travelling airport codes?

USER: My airport codes are IAH - DCA.

ASSISTANT: On which dates you want me to book your ticket?

USER: My planned travel dates are 11/19 and 11/21.

ASSISTANT: Do you have any airline preference?

USER: I need normal - cost airline preference only.

ASSISTANT: Let me your connection limit.

USER:  want a flight with maximum connection of 1. No more, specifications.

ASSISTANT: We found a flight 1011 in Delta airlines with 1 stopover and it costs you 100. Can I proceed?

USER: Yes, you can book that one.

ASSISTANT: Your booking is done.

USER: Thank you for your booking.

ASSISTANT: Thank you for reaching us, have a safe flight.