You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me to modify the travel dates in the previous ticket? Because the trip got postponed suddenly.

ASSISTANT: Sure, I can help you. May I know your name?

USER: Thank you for your quick response. My name is Frank Jones.

ASSISTANT: Please give me a moment to check your ticket status.

USER: Ok, take your time. I will wait for your reply.

ASSISTANT: Sorry Frank Jones, no reservation is available by your name.

USER: It's ok, not a problem with that one. Anyhow thank you for checking my ticket status.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.