You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Emily Davis here.

ASSISTANT: How may I guide you?

USER: Due to sudden change in my planned date of departure, I would like to change my reservation. Can you please help me out with that?

ASSISTANT: Davis, I am willing to help you for this. Let me check your reservation status in our database.

USER: Thank you for considering my request, take your time to check.

ASSISTANT: Davis sorry for inconvenience, no reservation is found on your name in our database.

USER: Oh! I think the ticket was not booked properly while I am booking. Anyway, thank you for the information.

ASSISTANT: Thank you Davis for utilizing our agency.

USER: Welcome.