You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I render you?

USER: I am Debra King. Can you help me in booking from IAH to ORD?

ASSISTANT: Sure, we are mirthful to help you. Do you require any stopovers in your journey?

USER: I need a direct flight.

ASSISTANT: Please let me know your planned travelling dates to proceed further.

USER: My trip dates are 04/22 to 04/24.

ASSISTANT: Please wait a moment I will check and revert to you.

USER: Sure.

ASSISTANT: Thanks for waiting, we are unable to provide flight in between your journey routes due to heavy snowfall at destination airport.

USER: No issue, thank you for checking.

ASSISTANT: Thanks for reaching us.