You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kenneth Collins here.

ASSISTANT: How can I address you?

USER: I need to book a flight ticket from Washington, DCA to Houston, HOU. Can you help me?

ASSISTANT: Sure. How much fare are you expecting?

USER: I can pay up to 5000 for this ticket.

ASSISTANT: On what dates you want me to make the reservation?

USER: My planned travel dates are Dec 11  and Dec 13.

ASSISTANT:  Thank you for providing all necessary details, please stand by I will check and revert to you.

USER: Ok, I will wait for your information.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: Ok, not a problem. Thank you for the information.

ASSISTANT: Thank you for approaching us.

USER: Thank you for searching.