You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Stephen Thompson.

ASSISTANT: How may I aid you?

USER: I want to change my travel dates in my previous reservation so can you please help me with that?

ASSISTANT: Sure, please give me a moment to check your ticket status.

USER: Ok, thank you.

ASSISTANT: I found your previous reservation, please provide your rescheduled itinerary dates.

USER: I want to take off on Nov 24 and please confirm my return ticket also on Nov 26.

ASSISTANT: May I know your genesis and terminus airport codes?

USER: I want to fly from EWR and destination airport is ATL.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: Sorry, no flights are available on your planned dates.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Thank you for contacting us.