You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I oblige you for the day?

USER: As I'm feeling sick, I just want to postpone my trip to some other dates. Please help me in that.

ASSISTANT: Sure, may I know your name to check the reservation?

USER: Sure, my name is Carolyn Martinez.

ASSISTANT: Ok, please wait for a minute.

USER: Sure, I'll wait for your response.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Oh! May be I did some mistake while I was booking the ticket. Thank you anyways.

ASSISTANT: Thank you for availing us.