You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Cynthia Young.

ASSISTANT: How can I support you for the day?

USER: I want to change my existing reservation due to my health issue. Can you help me out?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: We found a reservation on your name. Can you help me with your new journey details?

USER: Sure. My travelling dates are from 02/03 to 02/05. My airport codes are from IAH to DEN.

ASSISTANT: Thanks for your details. We are happy to inform you that there is a flight with 1 connection of price 100 in Frontier airline. Shall I proceed with 1028 flight?

USER: Ok, proceed with booking.

ASSISTANT: Ok, your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for connecting us. Have a safe journey.