Hello.
user
Hello.
assistant
I am Christine Collins.
user
Collins, how can I assist you?
assistant
I am planning to change my reservation for a suddenly  meeting was postponed, can you help in that?
user
Sure, I can help you to change your reservation. Let me check reserved ticket details.
assistant
Sure.
user
Sorry, no reservation found by your name.
assistant
Oh! That's ok. Thank you for your information.
user
Thank you for contacting us.
assistant