You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Susan Davis.

ASSISTANT: How can I assist you?

USER: Can you please help me to modify my reservation as my exams got postponed?

ASSISTANT: Sure, I can help you with that. Please wait for a while.

USER: Thank you for considering my request. Sure, I will wait.

ASSISTANT: Susan, there is no reservation found under your name to do modifications in that.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for reaching us.