You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what can I do for you?

USER: I want to change my journey date as my plan to visit Chicago is postponed. Can you help me with changing the reservation?

ASSISTANT: Sure, I will modify your journey date.

USER: Thank you.

ASSISTANT: Can I know on which name ticket has been reserved?

USER: The ticket has been reserved under the name of Edward Miller.

ASSISTANT: Please wait a minute, let me check your reservation status.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting, there is no reservation on your name.

USER: Ok, no issues. Thanks for your quick response.

ASSISTANT: Thank you.