You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I be of your assistance?

USER: Can you help me book a connecting flight from Houston to Washington on the name of Edward Lopez?

ASSISTANT: Sure, please let me know your planned travelling dates.

USER: My dates of journey are on 07/20 and 07/22.

ASSISTANT: Can I know your source and destination points?

USER: I need to travel from HOU to IAD.

ASSISTANT: May I know your fare limit?

USER: It should be within 500.

ASSISTANT: Just a moment I will check and get back to you.

USER: Ok.

ASSISTANT: Thanks for your time, we are unable to provide flight in between your journey routes due to heavy snow fall.

USER: That's ok, thank you for the information.

ASSISTANT: You're welcome. Thanks for picking us.