You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: As my interview got postponed, I need to change my reservation also. So, please help me in this.

ASSISTANT: Sure, please provide me your name?

USER: Thank you. I am Steven Brown.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We found a new reservation, please share me your journey details?

USER: Sure. I will start from Austin, AUS and reach to Houston, HOU. The journey dates are 01/25 to 01/27.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there were no flights with your specifications.

USER: Ok, thanks for the quick response.

ASSISTANT: Thank you for reaching us.