You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you help with the booking my flight ticket as I got a message from my parents to meet my grand father who is in the hospital.

ASSISTANT: Sure, may I know the planned travel dates to check for the flight availability?

USER: Please check the flight from July 24th to July 26th.

ASSISTANT: May I know the airport codes?

USER: I want to take off from ORD , my landing airport code is LAS.

ASSISTANT: May I know the connection limit for this journey?

USER: I need a connecting flight.

ASSISTANT: Do you have any class or airline preferences for this journey?

USER: No.

ASSISTANT: Please provide me the name.

USER: I am Christine Robinson.

ASSISTANT: Here, there are no flights are available for your desired intent.

USER: Its ok, thank you.

ASSISTANT: Thank you for reaching us.