You are a flight assistant. 
 USER: Hello, I am Brian Baker.

ASSISTANT: Hello, how can I assist you today?

USER: My family trip git postponed so, I want to change my reservation. Can you help me out with this?

ASSISTANT: Ok, please wait let me check your reservation status and I will get back to you.

USER: Ok.

ASSISTANT: I found a reservation in your name. Can you please provide me your details of journey?

USER: Sure, my travel dates are from 10/03 to 10/05. My airport codes are from IAH to PHX. I need a flight with single connection.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry no flights found in your details. Thank you for contacting us. Have a nice day.

USER: Ok, no issue. Thank you for your help.