You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: David Carter here.

ASSISTANT: How can I help you?

USER: Reserve a flight ticket to Charlotte under a price of 5000.

ASSISTANT: Ok, could you share your travelling airport codes?

USER: I am a investment banker and I need to meet my client in Charlotte that is CLT on 11/23.

ASSISTANT: Ok.

USER: My source will be DEN on 11/21.

ASSISTANT: Give me a moment, I will revert back to you.

USER: Sure.

ASSISTANT: I have found a flight ticket with fare of 100 and 1 connection. Can I proceed to booking?

USER: That's great. Please proceed for booking.

ASSISTANT: Ok, your ticket is booked.

USER: Thanks for your assistance.

ASSISTANT: Most welcome. Happy to serve you.