You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Rebecca Clark.

ASSISTANT: What help you are looking for?

USER: I would like to meet my cousin at Denver. Can you help me in booking a ticket?

ASSISTANT: Ok, I can check the flight for you. Can you please provide me your travel airport codes?

USER: The respective airport codes are EWR and DEN.

ASSISTANT: Ok, when do you want to travel?

USER: I would like to travel on dates 03/18 and 03/20.

ASSISTANT: Ok, please hold on for a minute.

USER: Sure.

ASSISTANT: Sorry to inform you, there are no flights available in this route on the dates you have given.

USER: Its ok, thank you for the information.

ASSISTANT: You are most welcome. Thank you for consulting us.