You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am David Hill.

ASSISTANT: How can I render you?

USER: Can you please hold me a flight ticket from Houston, TX - IAH to reach Denver, CO - DEN?

ASSISTANT: Sure, help me with your journey dates?

USER: My trip dates are 12/30 - 01/01.

ASSISTANT: Ok, wait for a minute.

USER: Sure.

ASSISTANT: There is a connecting flight from SouthWest airline of fare 100 and flight number 1021. Shall I confirm?

USER: Proceed.

ASSISTANT: Your flight reservation  has been processed.

USER: Thank you.

ASSISTANT: Thank you.