You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Richard Thomas here.

ASSISTANT: How may I guide you today?

USER: I want to cancel my reservation as my health is not well. Can you help me?

ASSISTANT: Sure, I will help you with that.

USER: Ok, I will be waiting for your response.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: I cancelled your ticket successfully.

USER: Ok, thank you for your humble assistance.

ASSISTANT: Thank you for reaching us.

USER: Welcome.