You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I guide you today?

USER: Can you please check for my previous booking status? I need to alter my journey dates.

ASSISTANT: Sure, I am gleeful to help you with that. May I know your name please?

USER: My booking was done by the name of Thomas Miller.

ASSISTANT: Please wait for a while, let me check your previous reservation status.

USER: Ok, I will be waiting for your response.

ASSISTANT: Thank you for waiting.

USER: Oh! That's completely fine.

ASSISTANT: There is no active reservation found on your name in our database to change it.

USER: No issues. Thank you for checking for my booking.

ASSISTANT: Most welcome, thank you for contacting us. Have a nice day.

USER: Most welcome.