You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you now?

USER: Can you help me to cancel the reservation which I had done recently?

ASSISTANT: Ok, may I know your planned dates for this journey?

USER: Ok, please check for the name Elizabeth Clark.

ASSISTANT: Ok, please be on hold for a while.

USER: Ok, I will wait.

ASSISTANT: There is no reservation available by your name.

USER: Ok, that is not a problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you for providing the information.