You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Rebecca Anderson.

ASSISTANT: Is there any help that you are seeking from us?

USER: Owing an emergency, I need to travel from PHL to IAH. Can you help me in booking?

ASSISTANT: Sure, can you provide your preferable dates?

USER: My travelling dates are 06/23 to 06/25.

ASSISTANT: Let me check with that wait for a moment.

USER: Sure, I will stand by.

ASSISTANT: I am sorry that I am unable to find the flight on the dates which you have provided to us.

USER: No issue, thank you.

ASSISTANT: Welcome.